

Posted: 9/21/2011 7:23:24 PM EST
I am looking to build an AR geared toward accuracy. I am looking at the 5.56, 6.8 SPC, and 6.5 Grendel when I came upon the .264 LBC-AR. I did some searching online and it is Les Baer's version of the 6.5 without having to give money to Bill Alexander which was the very reason I was leaning away from the 6.5. Now my question is (please do not flame me for a stupid question), can I use 6.5 Grendel ammo in a .264 LBC AR? I did do a search here and on Google but I got more confused the more I looked around.
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6.5 Grendel Hornady factory ammo shoots .5" groups in my 264 LBC. Les gave Alexander Arms the finger when they boosted the licensing fee's. The only difference is that the .264 LBC chamber shoots better than a Grendel.
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That reply has one or two slight errors that need some clarification.
1. Les Baer never paid a single cent to Alexander Arms to build Grendels. 2. If we did crank up the "fee" it would still be a total value of nothing. We do not actually charge anything for building Grendels or the ammunition. The license was concerned with standardization of the caliber in the absence of SAAMI. A situation that is now remedied. 3. The LBC chamber is not any more accurate, in fact Grendel chambers report more accuracy with a wider range of loads on average. 4. There is no industry load data verified for these non Grendel wildcat chambers and little if any ammunition. |
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i have a Model 1 Sales SBR 6.5 Grendel (or whatever Model 1 calls it) and it shoots both ammo. i found the Hornady and Wolf ammo shoot more accurately out of my gun than the .264 LBC-AR match ammo though.
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From what I've heard and been told the 6.5 LBC is pretty well through being SAAMI specced which the Grendel is not. We'll see what the future holds for Hornady producing 6.5 Grendel Ammo. I'll bet they lean more towards manufacturing 264 LBC ammo.
The only truth I've seen in your post is reason why Les dropped Alexander Arms. It was over an entirely different issue. The only way to make an accuracy claim for either chamber would be a laboratory test under ideal conditions using more then one or two rifles representative of each manufacturer using a wide variety of factory ammo and handloads. As I am aware that has not been done. To answer the poster both ammo's are interchangeable. |
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The only difference is that the .264 LBC chamber shoots better than a Grendel. Agree with this, Black Hills 264 ammo with 123gr SMKs will easily shoot under 1/2" |
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The only difference is that the .264 LBC chamber shoots better than a Grendel. Agree with this, Black Hills 264 ammo with 123gr SMKs will easily shoot under 1/2" I don't agree. I can get the same with handloads in the Grendel |
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The only difference is that the .264 LBC chamber shoots better than a Grendel. Agree with this, Black Hills 264 ammo with 123gr SMKs will easily shoot under 1/2" I don't agree. I can get the same with handloads in the Grendel Well yeah with handloads but that is out of the box factory ammo shooting less than 1/2" groups. It will do the Same with 100gr Barnes TTSX, 107 SMK, 108 Lapua and 123 AMAX handloaded. We have tested both enough to see the difference, the tighter neck diameter and standard match type (non compound angle Grendel) throat is more accurate in our tests. |
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The SAAMI specification is for the 6.5 Grendel. The round was sponsored by Hornady and the technical sign off is for the Grendel dimension under the Grendel name. The information proffered in respect to alternative designations and dimensions is not correct We are somewhat well placed to have this information first hand both from Hornady and SAAMI.
Regarding comments about testing the chambers it is interesting to see this brought out by Tim-W, a gentleman who is intrinsically involved with the 6.8 SPC. Perhaps his testing is not as extensive as is required to fully determine which design offers the best utility across the board. This is understandable as he is primarily concerned with other cartridges. Conversely as the company who actually draw and created the Grendel, tested multiple prototype chamber designs (including tight necks and traditional throats) not in just singular barrels but in runs, we are probably better placed than anyone to proffer the observations on the chamber designs and what works for this cartridge. |
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From what I've heard and been told the 6.5 LBC is pretty well through being SAAMI specced which the Grendel is not. False |
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Les gave Alexander Arms the finger when they boosted the licensing fee's. Again, False. See post 3. |
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We do not actually charge anything for building Grendels or the ammunition. The license was concerned with standardization of the caliber in the absence of SAAMI. A situation that is now remedied. OH SNAP! This is a fact that the various AA haters need to contemplate. |
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We do not actually charge anything for building Grendels or the ammunition. The license was concerned with standardization of the caliber in the absence of SAAMI. A situation that is now remedied. OH SNAP! This is a fact that the various AA haters need to contemplate. Indeed. People are so quick to post assumptions while being ignorant of all the facts. I, myself will be getting a 6.5 upper next year. I’ll not give LB a dime. Some manufacturers have a superiority complex and LB is certainly one of them. Much rather go to the source anyway. The exception is .300 Whisper vs. .300 Blackout. For me, the .300 BLK is the way to go. J.D. Jones can go pound sand. |
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The only difference is that the .264 LBC chamber shoots better than a Grendel. Agree with this, Black Hills 264 ammo with 123gr SMKs will easily shoot under 1/2" I don't agree. I can get the same with handloads in the Grendel Well yeah with handloads but that is out of the box factory ammo shooting less than 1/2" groups. It will do the Same with 100gr Barnes TTSX, 107 SMK, 108 Lapua and 123 AMAX handloaded. We have tested both enough to see the difference, the tighter neck diameter and standard match type (non compound angle Grendel) throat is more accurate in our tests. I only shoot handloads. It has never seen factory. The way I like it |
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We do not actually charge anything for building Grendels or the ammunition. The license was concerned with standardization of the caliber in the absence of SAAMI. A situation that is now remedied. OH SNAP! This is a fact that the various AA haters need to contemplate. yeah that pretty much seems to end it, doesn't it? kinda hard to argue with a quality standard. |
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2. If we did crank up the "fee" it would still be a total value of nothing. We do not actually charge anything for building Grendels or the ammunition. The license was concerned with standardization of the caliber in the absence of SAAMI. A situation that is now remedied. So if LB wanted to make a Grumble chambered barrel, even if it did yelid better results, they would have to pay AA to do so? |
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2. If we did crank up the "fee" it would still be a total value of nothing. We do not actually charge anything for building Grendels or the ammunition. The license was concerned with standardization of the caliber in the absence of SAAMI. A situation that is now remedied. So if LB wanted to make a Grumble chambered barrel, even if it did yelid better results, they would have to pay AA to do so? Alexander Arms never charged a fee to Les Baer to build Grendels. The licensing was always an issue of meeting a quality standard, and never involved a fee. Les Baer is free to build whatever he sees fit to build. When he chose to use the trademark Grendel name, he was required simply to build it to the Grendel specification, nothing else was required. |
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2. If we did crank up the "fee" it would still be a total value of nothing. We do not actually charge anything for building Grendels or the ammunition. The license was concerned with standardization of the caliber in the absence of SAAMI. A situation that is now remedied. So if LB wanted to make a Grumble chambered barrel, even if it did yelid better results, they would have to pay AA to do so? Alexander Arms never charged a fee to Les Baer to build Grendels. The licensing was always an issue of meeting a quality standard, and never involved a fee. Les Baer is free to build whatever he sees fit to build. When he chose to use the trademark Grendel name, he was required simply to build it to the Grendel specification, nothing else was required. I'm confused, so then when several companies all the sudden decided to stop producing Grendel and Beowulf barrels it was because they didn't want to build exactly to AA specs? Isn't that required when they make barrels around a SAAMI cartridge as well? Not trying to start a fight or anything I'm just trying to understand what happened. As it was described in several bulletins and forums companies couldn't come to an agreement because of an "onerous licensing agreement" but if it was as simple as it is being made to seem here. . . It seems like no one is willing to tell the whole story. One other question, how long (rough estimate) will it be until SAAMI actually considers the cartridge among 'their' list of cartridges. Won't this allow any SAAMI member to produce the Grendel stuff without AA's consent? |
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I'm confused, so then when several companies all the sudden decided to stop producing Grendel and Beowulf barrels it was because they didn't want to build exactly to AA specs? Isn't that required when they make barrels around a SAAMI cartridge as well?
Not trying to start a fight or anything I'm just trying to understand what happened. As it was described in several bulletins and forums companies couldn't come to an agreement because of an "onerous licensing agreement" but if it was as simple as it is being made to seem here. . . It seems like no one is willing to tell the whole story. One other question, how long (rough estimate) will it be until SAAMI actually considers the cartridge among 'their' list of cartridges. Won't this allow any SAAMI member to produce the Grendel stuff without AA's consent? Several? The only one I am aware of was Satern. The whole story is more complex than it has been made to sound, and a technical forum is not the place to discuss it. The Grendel cartridge itself has been approved by SAAMI. As I understand it, its simply the details regarding release of the trademark that remain to be cleared up. |
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2. If we did crank up the "fee" it would still be a total value of nothing. We do not actually charge anything for building Grendels or the ammunition. The license was concerned with standardization of the caliber in the absence of SAAMI. A situation that is now remedied. So if LB wanted to make a Grumble chambered barrel, even if it did yelid better results, they would have to pay AA to do so? Alexander Arms never charged a fee to Les Baer to build Grendels. The licensing was always an issue of meeting a quality standard, and never involved a fee. Les Baer is free to build whatever he sees fit to build. When he chose to use the trademark Grendel name, he was required simply to build it to the Grendel specification, nothing else was required. If that was the case, LB must have seen some areas that could have been improved and started their own chamber. |
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I'm confused, so then when several companies all the sudden decided to stop producing Grendel and Beowulf barrels it was because they didn't want to build exactly to AA specs? Isn't that required when they make barrels around a SAAMI cartridge as well?
Not trying to start a fight or anything I'm just trying to understand what happened. As it was described in several bulletins and forums companies couldn't come to an agreement because of an "onerous licensing agreement" but if it was as simple as it is being made to seem here. . . It seems like no one is willing to tell the whole story. One other question, how long (rough estimate) will it be until SAAMI actually considers the cartridge among 'their' list of cartridges. Won't this allow any SAAMI member to produce the Grendel stuff without AA's consent? Several? The only one I am aware of was Satern. The whole story is more complex than it has been made to sound, and a technical forum is not the place to discuss it. The Grendel cartridge itself has been approved by SAAMI. As I understand it, its simply the details regarding release of the trademark that remain to be cleared up. Contrary to your belief I think a technical forum is just the place to explain the entire story. I'm not trying to knock AA but I can assure you the ongoing drama involving AA has me reconsidering my next barrel purchase. And just to put that into perspective, if you check your records you'll find AA just shipped my first Grendel barrel yesterday along with a lot of brass. But that barrel is only 1 of 2 Grendels I'm looking to build. I'm sure I'm not the only one reading these threads while considering who to purchase a barrel from. |
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I'm confused, so then when several companies all the sudden decided to stop producing Grendel and Beowulf barrels it was because they didn't want to build exactly to AA specs? Isn't that required when they make barrels around a SAAMI cartridge as well?
Not trying to start a fight or anything I'm just trying to understand what happened. As it was described in several bulletins and forums companies couldn't come to an agreement because of an "onerous licensing agreement" but if it was as simple as it is being made to seem here. . . It seems like no one is willing to tell the whole story. One other question, how long (rough estimate) will it be until SAAMI actually considers the cartridge among 'their' list of cartridges. Won't this allow any SAAMI member to produce the Grendel stuff without AA's consent? Several? The only one I am aware of was Satern. The whole story is more complex than it has been made to sound, and a technical forum is not the place to discuss it. The Grendel cartridge itself has been approved by SAAMI. As I understand it, its simply the details regarding release of the trademark that remain to be cleared up. Saturn and MidwayUSA's in house brand, AR-Stoner. I don't exactly know the relationship between Saturn and Liberty but they also no longer carry Grendel or Beowulf but now have the lbc in their line up. There's three that I know of for sure but thought there was at least one more |
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I'm confused, so then when several companies all the sudden decided to stop producing Grendel and Beowulf barrels it was because they didn't want to build exactly to AA specs? Isn't that required when they make barrels around a SAAMI cartridge as well?
Not trying to start a fight or anything I'm just trying to understand what happened. As it was described in several bulletins and forums companies couldn't come to an agreement because of an "onerous licensing agreement" but if it was as simple as it is being made to seem here. . . It seems like no one is willing to tell the whole story. One other question, how long (rough estimate) will it be until SAAMI actually considers the cartridge among 'their' list of cartridges. Won't this allow any SAAMI member to produce the Grendel stuff without AA's consent? Several? The only one I am aware of was Satern. The whole story is more complex than it has been made to sound, and a technical forum is not the place to discuss it. The Grendel cartridge itself has been approved by SAAMI. As I understand it, its simply the details regarding release of the trademark that remain to be cleared up. That doesn't make sense and is an ambiguous statement. It can't be approved until the trademark fiasco has been settled. Maybe you meant to say it has passed the requirements, but it's not finalized, again, because of the trademark. |
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I'm confused, so then when several companies all the sudden decided to stop producing Grendel and Beowulf barrels it was because they didn't want to build exactly to AA specs? Isn't that required when they make barrels around a SAAMI cartridge as well?
Not trying to start a fight or anything I'm just trying to understand what happened. As it was described in several bulletins and forums companies couldn't come to an agreement because of an "onerous licensing agreement" but if it was as simple as it is being made to seem here. . . It seems like no one is willing to tell the whole story. One other question, how long (rough estimate) will it be until SAAMI actually considers the cartridge among 'their' list of cartridges. Won't this allow any SAAMI member to produce the Grendel stuff without AA's consent? Several? The only one I am aware of was Satern. The whole story is more complex than it has been made to sound, and a technical forum is not the place to discuss it. The Grendel cartridge itself has been approved by SAAMI. As I understand it, its simply the details regarding release of the trademark that remain to be cleared up. Saturn and MidwayUSA's in house brand, AR-Stoner. I don't exactly know the relationship between Saturn and Liberty but they also no longer carry Grendel or Beowulf but now have the lbc in their line up. There's three that I know of for sure but thought there was at least one more As you mentioned Saturn and AR-Stoner, also Satern is involved with Liberty barrels so that's another one gone, then we have one of the first to leave and was Lothar Walther, and last Sabre. Now in all fairness Sabre didn't quit making barrels for AA, they were arrested by the ATF and have gone out of business. I'm not sure who picked them up. So not counting Sabre that's four. I question to why AA has a terrific sale on their 6.5 Grendel receivers. I mean they sold for practically cost, why? If business is that booming for them why sell off the receivers? Are they going to dump the Grendel? Makes one wonder. |
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There are no trademark issues so nothing needs to be resolved.
Grendel sales are actually very good and the caliber is booming. |
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[ Makes one wonder.
"Wonder" is supposition with no factual basis. Tell me again about the SAAMI process? |
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[ Makes one wonder.
"Wonder" is supposition with no factual basis. Tell me again about the SAAMI process? The SAAMI process is very well defined on their website. I suggest that you read it. Why the super sale on 6.5 receivers? |
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We ran a labour day special on lowers. It was extremely well received. 100 only to the first customers with a limit of 2 per person.
We also ran a special on a once a year loading for the Grendel with custom 115 grain Berger projectiles. It was also well received to the extent we oversold. We may actually extend this offering for all those who missed the opportunity to get in on this. We may not be able to quite match the price this time as those Bergers are quite expensive. The ammunition uses Hornady 6.5 Grendel brass and the bullet has the hunting style jacket. Berger agreed to run a custom weight especially for this Alexander Arms loading. Anyone interested should keep an eye on our web site I am a little familiar with SAAMI and its interaction. We shared a very nice conversation/dinner with Remington about the mechanics and obviously Hornady held our hand all the way through as they were the sponsor. Pushing the Grendel through SAAMi was an eye opening experience as the technical examination includes many aspects that the average observer does not consider. It was a relief to see the chamber and cartridge emerge unscathed and in the same format they entered. |
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[ Makes one wonder.
"Wonder" is supposition with no factual basis. Tell me again about the SAAMI process? The SAAMI process is very well defined on their website. I suggest that you read it. Why the super sale on 6.5 receivers? Ummm......if you spend five minutes checking the web you'll find many good deals on stripped receivers. A number of companies have been selling them at similar prices. Why? Anyone in the industry knows July/August and the beginning of Sept is the slow time of the season. Why are you telling him to read it when the Grendel has already been through the process? ![]() If business is so bad for AA how did they just have the ability to hire on one of the best known and respected people in the industry? ![]() What company do you work for/are associated with again? |
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[ Makes one wonder.
"Wonder" is supposition with no factual basis. Tell me again about the SAAMI process? The SAAMI process is very well defined on their website. I suggest that you read it. Why the super sale on 6.5 receivers? Ummm......if you spend five minutes checking the web you'll find many good deals on stripped receivers. A number of companies have been selling them at similar prices. Why? Anyone in the industry knows July/August and the beginning of Sept is the slow time of the season. Why are you telling him to read it when the Grendel has already been through the process? If business is so bad for AA how did they just have the ability to hire on one of the best known and respected people in the industry? Quiet now Mr. Fortier. I need the sympathy vote, you'll take the edge off the panhandling gig |
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[ Makes one wonder.
"Wonder" is supposition with no factual basis. Tell me again about the SAAMI process? Thanks for the english lesson. But your the vendor and we're the customers, so maybe you should explore "Wonder" as a verb. ![]() 2. To be filled with curiosity or doubt. ![]() Because thats where a few of us are at and its going to effect business sooner or later. ![]() Edited to add: BTW..... I'm not questioning your sales, the Hornady brass sale was much appreciated. |
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[ Makes one wonder.
"Wonder" is supposition with no factual basis. Tell me again about the SAAMI process? The SAAMI process is very well defined on their website. I suggest that you read it. Why the super sale on 6.5 receivers? Ummm......if you spend five minutes checking the web you'll find many good deals on stripped receivers. A number of companies have been selling them at similar prices. Why? Anyone in the industry knows July/August and the beginning of Sept is the slow time of the season. Why are you telling him to read it when the Grendel has already been through the process? ![]() If business is so bad for AA how did they just have the ability to hire on one of the best known and respected people in the industry? ![]() What company do you work for/are associated with again? Why do you ask that David? Do I have work for and represent some part of the industry to be allowed to post on here? |
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[ Makes one wonder.
"Wonder" is supposition with no factual basis. Tell me again about the SAAMI process? The SAAMI process is very well defined on their website. I suggest that you read it. Why the super sale on 6.5 receivers? Ummm......if you spend five minutes checking the web you'll find many good deals on stripped receivers. A number of companies have been selling them at similar prices. Why? Anyone in the industry knows July/August and the beginning of Sept is the slow time of the season. Why are you telling him to read it when the Grendel has already been through the process? If business is so bad for AA how did they just have the ability to hire on one of the best known and respected people in the industry? Quiet now Mr. Fortier. I need the sympathy vote, you'll take the edge off the panhandling gig I doubt he'll take the edge off anything. I'm right you know and what makes you so right? I didn't see you at the last shot show, if business was that great why weren't you there? What new products have you fielded since the 6.5 Grendel and 50 Beowulf? You've been in business how long now, someting like ten years? I'm asking legitimate questions. I don't see why you have to have someone else represent you when you're posting here. I have more questions. Is Lapua going to sell you more brass? That is great brass you know. I'm waiting to see that major foreign ammunition company come aboard with the 6.5 Grendel also. I was talking to a friend of yours, Eran Bauer. He had much to say about you. I have a much better understanding of you how came along to the point where you are with Alexander Arms. Does Fortier know him? One last thing. I'm very interested in obtaining a AR 15 in 22 Magnum that you are suppose to be working on. When do you think that will be available? |
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Why do you ask that David? Do I have work for and represent some part of the industry to be allowed to post on here? No, anyone can post here. But it is against forum rules to troll another company if you are associated with a competitor....... |
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Why do you ask that David? Do I have work for and represent some part of the industry to be allowed to post on here? No, anyone can post here. But it is against forum rules to troll another company if you are associated with a competitor....... I can assure you I'm not a troll. |
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Actually we are doing well but SHOT show is not really our thing. We tend to roll out at the NRA shows which we attend religiously and where we get the best response as these are open to the public who are really the customers. Usually we just walk the SHOT show and meet with those who we need to see. Fortier alluded to our recent new staff member who we are really pleased to have on board and who is absolutely top notch in his field. This is another step forward for us and the products we manufacture. We expect to be able to formally announce some fairly exciting events and changes in the next few weeks.
While this is not really a variant in the correct sense and should be placed on a different section, but you asked, we have just concluded and launched our 17 HMR conversion and also full AR rifles in this caliber. This product is our latest and also is unique to our company. It offers a more powerful alternative to the 22LR conversion and easily allows targets at 200 to 300 yards to be engaged. While obviously not as cheap as the 22 and not intended for the same type of training it does allow the effects of shooting to longer distances to be examined without the cost associated with a full centre fire. The cartridge is well know in its application to smaller game which gives the rifle a hunting ability in its own right without excessive noise or muzzle blast. We have been examining the possibility of a 22 WMR but I think I have explained that the conversion from 17 HMR to 22 WMR is nearly as fraught as moving from 22 WMR to 17HMR. Our initial testing indicates that a good conversion would take considerable time and effort so this has been somewhat sidelined while we work on the projects we had scheduled. We have a new large caliber long range weapon system just entering prototype stage and which is now taking a lot of engineering effort. |
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Sorry I missed the answer about Lapua, Yes we just received the next shipment from Lapua and will continue to work with them not only on the Grendel but also some others. Lapua are an exceptional company to work with and as the Grendel grows we will be moving forward with them.
This morning I spent some time looking at a newly arrived case of Grendel from the new supplier. There is a lot of work to conclude before much more can be posted but again yes we have a new entry in the ammunition field. Not going to be anything like the Lapua we use in our manufacture but I am sure a lot of shooters will welcome this when it starts to hit the shelves. |
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Sorry I missed the answer about Lapua, Yes we just received the next shipment from Lapua and will continue to work with them not only on the Grendel but also some others. Lapua are an exceptional company to work with and as the Grendel grows we will be moving forward with them. This morning I spent some time looking at a newly arrived case of Grendel from the new supplier. There is a lot of work to conclude before much more can be posted but again yes we have a new entry in the ammunition field. Not going to be anything like the Lapua we use in our manufacture but I am sure a lot of shooters will welcome this when it starts to hit the shelves. I appreciate the answer to my questions. I really hope you get the 22 magnum worked out as it's a favorite of mine. I know the 17 is the hot rimfire going, but I still think the 22 Mag is a better round with more terminal performance. |
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As we are on the topic of the 6.5 Grendel and .264 LBC, I'd like to validate/verify my understanding of the differences between the two.
I've read in one or another of the popular publications that the primary difference between the 6.5 Grendel and the .264 LBC is in the throat. As I remember, it was stated the Grendel uses a compound throat to maximize performance across a wide range of 6.5mm bullet diameters and shapes, from the lightweights to the heavies, while the .264 LBC's throat is intended to be optimized for the 123 grain projectiles that the industry appears to consider the optimum "all-round" projectile for the cartridge. If I'm incorrect in this assumption, I sincerely apologize. Also, if I remember correctly, the 6.5 Grendel uses a bolt that has been further improved and optimized over the traditional 7.62x39mm AR bolt for use in the 6.5 Grendel. I have no idea about the .264 LBC, but would expect them to be using the Grendel-style bolt over the 7.62x39mm bolt, but I have no information one way or the other. Given the extent to which this cartridge is capable of expanding the ballistic envelope of the AR-15, I deeply appreciate the work that Mr. Alexander has put into turning out high quality designs. The alternative-caliber AR-15 is an exciting world to explore. |
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Yes that summary is correct. The Grendel uses two angles in the throat which allows the bullet to centre in the bore by sitting into the rifling, but set up such that it does not raise the pressures. 6.5 calibers obey a basic rule, "bullet in middle of bore = good accuracy, bullet off centre = bad accuracy. With the case so short the chamber must be incredibly tight to get the gun to shoot well with everything centering from the case. The design is taken from the 6.5x55 which has the long shallow throat running back to the neck transition and also the 303 Enfield. The benifit is that it allows a very loose chamber which is conducive to use with semi automatic, fully automatic mechanisms and laquer coated/sealed cases. It provides an excellent level of accuracy ( as good as anything tested) and we were surprised to see that it is also headspace tolerant.
The neck is 0.300" diameter and the equivelent freebore( not realized for seating bullets) is 0.178" The 264 uses a regular freebore of 0.120" length and a 0.295" neck. This configuration was amongst those originally tested and when applied in a high end barrel can, by careful component selection, provide excellent accuracy. In our tests in several hundreds of barrels the chamber was not a robust solution for a production gun that might not sport a hand selected cut rifled barrel. Being part of the very early tests we also did not take the time to thoroughly match the chamber to the case dimensions. This has shown up to some extent with the rash of these clone chambers that would not accept the Hornady Grendel ammunition and brass. Problems ranged from interferance at the neck shoulder junction to headspacing on the case mouth. The Grendel bolt is actually also the Beowulf bolt. Originally faced with the 0.058 thick rim, which is desirable for bigger cases for a more robust purchase, this demanded that the extractor slot be widened. The back of the slot must be level with the bolt face so material can only be romoved forwards which leaves an intangibly thin extractor hook. The solution has its origin in the early Colt Sporter and the reference surface is moved backwards to allow the slot to widen without removing the material from the hook. We have probably, over the years made well over 60,000/70,000 of these units. The bolt tail is extended by the equivelent amount to allow compatibitiy with the regular firing pin. The striking position for the hammer remains well inside the possible tolerance stack. Generally there are a lot of these bolts as most of the large machine houses now use our prints for this bolt size. I would expect the 264 to use this style of bolt as the prints were furnished to LBC as part of the drawing pack together with a list of the suppliers. |
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Again I did not fully answer the question. The 123 grain is a flagship projectile but is not always optimum. Despite the slight drop in Bc by moving to lighter bullets the additional velocity gain can quickly offset this in the 107-110 grain range. The loading densities are frequently more appealing and for the handloader with canister powders this is an easier palce to start.
Conversley for hunting applications (bigger game animals) going heavier is, for the intermediate cartridge, better. Sectional energy is required for less than optimum shots frequently encountered in the field. The 120 through 140 grain range is well suited for this caliber and easily loaded |
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Mr. Alexander,
Thanks for those posts. Very, very cool. The testing and engineering behind the 6.5 Grendel is fascinating. As shooters today, we are truly experiencing a cornucopia of riches. |
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Bill,
I know ths isn't what the thread is about, but we already broke the ice here on the 17 HMR. You may find this test interesting since you are going to field one. You may have seen this already, but here it is: http://www.bullberry.com/HMRdata.html |
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Thank you for the interesting reference
We are not going to field a 17 HMR, we are already fielding it. The unit uses an 18" barrel with a 1/2-28 threaded muzzle. This was shown in our testing to be about the most efficient for the cartridge. We have run this both with and without suppresion with no function issues. It worked out to be quite an involved conversion as we needed not only the upper but also a mag block, extended mag latch, recoil cassette, magazines and even a chamber brush. The uptake has been nothing short of stellar for this product so perhaps I worried too much about the costs. Demand has been so high that we now run a 17 HMR designated lower in which the block is cross pinned so it is legal for California without the use of a mag button. Mags are 10 round currently. Interestingly this has taken nearly 3 1/2 years to get to a position where we are actually confident with the design during this time we built upwards of 20 prototypes not including some rebuilds and shot well over 50,000 rounds of ammunition. The longer pressure duration is problematic and demands a careful system balance if it is to work well. To date the only field problems seen have been in guns fitted with two stage or target triggers ( the stock conversion is designed for regular hammers). The lighter hammer and spring weights allow excessive bolt acceleration which causes the bolt to loose control of the empty case at too high an incident. We have just completed testing a heavy replacement buffer which will be an optional replacement for those customers who wish to run such fire control groups. The 22 WMR you are interested in, was easy to balance for bolt speed but this cartridge does not want to feed reliably. The long parallel case can be persuaded to shuck from the magazine into the chamber but lead nose bullets cause failures. Working prototypes are easy, but a production route for the ramping on the barrel is not easy to achieve in a robust manner suitable for mass production. This is not to say the project is abandoned just we are already scheduled to work on the new weapons system and never intended to dive into the 22 WMR. |
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Quoted:
Thank you for the interesting reference We are not going to field a 17 HMR, we are already fielding it. The unit uses an 18" barrel with a 1/2-28 threaded muzzle. This was shown in our testing to be about the most efficient for the cartridge. We have run this both with and without suppresion with no function issues. It worked out to be quite an involved conversion as we needed not only the upper but also a mag block, extended mag latch, recoil cassette, magazines and even a chamber brush. The uptake has been nothing short of stellar for this product so perhaps I worried too much about the costs. Demand has been so high that we now run a 17 HMR designated lower in which the block is cross pinned so it is legal for California without the use of a mag button. Mags are 10 round currently. Interestingly this has taken nearly 3 1/2 years to get to a position where we are actually confident with the design during this time we built upwards of 20 prototypes not including some rebuilds and shot well over 50,000 rounds of ammunition. The longer pressure duration is problematic and demands a careful system balance if it is to work well. To date the only field problems seen have been in guns fitted with two stage or target triggers ( the stock conversion is designed for regular hammers). The lighter hammer and spring weights allow excessive bolt acceleration which causes the bolt to loose control of the empty case at too high an incident. We have just completed testing a heavy replacement buffer which will be an optional replacement for those customers who wish to run such fire control groups. The 22 WMR you are interested in, was easy to balance for bolt speed but this cartridge does not want to feed reliably. The long parallel case can be persuaded to shuck from the magazine into the chamber but lead nose bullets cause failures. Working prototypes are easy, but a production route for the ramping on the barrel is not easy to achieve in a robust manner suitable for mass production. This is not to say the project is abandoned just we are already scheduled to work on the new weapons system and never intended to dive into the 22 WMR. Interesting. For your information I believe Remington pulled their semi auto rifle in 17 HMR off the market. They had a recall for the rifles. I wonder what the problem was. A good number of years ago Rick Jamison was taking 22 mag ammo and pulling the bullets and dumping the powder, then necking the case down to 17 caliber. Thiis is way before any of the 17 rim fires came about. He cautioned against doing it as the case is still primed and being a rim fire more susceptible to an accident. I'm not saying he was the first to do this, but he did write about. I'm sure others experimented with it |
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The information is probably available on this forum if you ask in the rimfire section. We are aware of Remingtons position.
Our challenge in this system was to isolate the problems and negate or solve them. One cannot stop the occasional rim failure but the gun design should easily absorb the effects without damage to itself or the shooter. Additional work to ensure safety is a must and the situation with Remington left an extremely critical customer base so any new weapon must be as close to perfect as possible. It was not an option to launch a system with teathing problems and then rectify these as they became prevelent. Regardless we have have seen the fire control problem (target triggers) which we did not anticipate. The development time reflects the amount of testing required. The 17 HMR cartridge is no more or less dangerous than any other rimfire. Peak pressure is 26,000 psi and most cartridges work as designed. There is a slight incidence of rim failure per any rimfire and there are also odd squib loads. (about 1 in 10,000). The gun must be well balanced and this will tend to show the variation of loading in any particular batch (ejection patern) The round exibits a strange recoil impulse which is abusive to the recoil spring if the unit is not well designed. The earliest work on necking rimfires I know of can be traced to the Eley facility. They built a 20 cal (not verified) on the 22 LR case but not as a commercial venture. I am not aware of any larger caliber rimfires which were necked but this is a lack of knowledge rather than a definative statement. Research into the early inside primed cases may show such cartridges existed before Eley's work. |
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There is a lot of hate for the Grendel for some reason on this site, I don't know why because it's a HELL of a round. The issue is not "if" is a good round, it certainley is a good one, not the answer to all problems though. The issue is the person pushing it and their practices. |
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This thread needs more Grendel pics http://i957.photobucket.com/albums/ae52/762RUM/ec1b7f62.jpg OP, while Les Baer's pistols are works of art I don't think all that is nessacery for an accurate AR. The one I built above consistantly shoots .5 MOA groups, with my personal 123A-Max handloads. There is a lot of hate for the Grendel for some reason on this site, I don't know why because it's a HELL of a round. +1 RUM. Where did you get that handguard? I just finished my grendel (minus quality scope) and I loved it before I finished it. Finishing it for me was taking off the handguards and installing vtac ff tube. Now I just have to find a range around here so I can sight this bad mama jama in. The only problem I have with grendel (was the rarity of ammo but that seems fixed now) is the mags. I have 14 CProducts mags (7 14/15 and 7 25/26) with all but 2 in the plastic. The 2 that are out don't feed properly and mess the bullets up especially if you load them all up and that's why the rest are still in the plastic, fun show coming up. I'm thinking about the stoner mags by midway but might just go the 10 rounders from AA. I'd rather go with AA but the reviews are so-so at best. I guess my rant is that I'd like to see better/more mag options for the grendel because I hate loading only 4-6 rounds in. |
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Quoted:
This thread needs more Grendel pics http://i957.photobucket.com/albums/ae52/762RUM/ec1b7f62.jpg OP, while Les Baer's pistols are works of art I don't think all that is nessacery for an accurate AR. The one I built above consistantly shoots .5 MOA groups, with my personal 123A-Max handloads. There is a lot of hate for the Grendel for some reason on this site, I don't know why because it's a HELL of a round. Rum, What brand hand guard is that on your rifle. Very nice rifle by the way. |
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