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Posted: 11/26/2020 5:05:18 PM EDT
[#1]
Well barrels are impossible to find. I have everything to build one but can’t find the barrel. Got 500 rounds of ammo too I can’t shoot. Closest thing I can find to an eta is 15week backorder from cmmg
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Posted: 11/26/2020 5:11:37 PM EDT
[#2]
Ballistic Advantange just announced some 6 ARC barrels for sale. Check them out.
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Posted: 11/26/2020 5:16:17 PM EDT
[#3]
Quote HistoryQuoted: Ballistic Advantange just announced some 6 ARC barrels for sale. Check them out. You got my hopes up. Anything longer then 16” is out of stock. 
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Posted: 11/26/2020 5:30:17 PM EDT
[#4]
Quote HistoryQuoted: You got my hopes up. Anything longer then 16” is out of stock. I just ordered from Brownells… 18" SPR for $186.43. ETA- Ballistic Advantage bead blasted SS. |
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Posted: 11/26/2020 5:30:53 PM EDT
[#5]
Quote HistoryQuoted: You got my hopes up. Anything longer then 16” is out of stock. Quote HistoryQuoted: Quoted: Ballistic Advantange just announced some 6 ARC barrels for sale. Check them out. You got my hopes up. Anything longer then 16” is out of stock. Just sent you an IM and saw the rest of the thread. |
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Posted: 11/26/2020 5:34:45 PM EDT
[#6]
Quote HistoryQuoted: I just ordered from Brownells… 18" SPR for $186.43. ETA- Ballistic Advantage bead blasted SS. Quote HistoryQuoted: Quoted: You got my hopes up. Anything longer then 16” is out of stock. I just ordered from Brownells… 18" SPR for $186.43. ETA- Ballistic Advantage bead blasted SS. Good luck. I’ve had a backordered 6mm arc barrel from brownells for 3 months now. |
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Posted: 11/26/2020 5:35:46 PM EDT
[#7]
Back on topic... is anyone actually shooting this caliber?
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Posted: 11/26/2020 5:45:58 PM EDT
[#8]
Quote HistoryQuoted: Good luck. I’ve had a backordered 6mm arc barrel from brownells for 3 months now. It showed the 16", 18", and 20" In Stock with the 22" and 24" not available. When I ordered I got a delivery date of 12-8-20. I have been watching the website and they were previously listed as not available. I'll update if/when I get a shipping notification. |
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Posted: 11/26/2020 5:46:52 PM EDT
[#9]
Quote HistoryQuoted: Ballistic Advantange just announced some 6 ARC barrels for sale. Check them out. Yep, that's what made me go check Brownell's this afternoon and noticed they were showing in-stock. |
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Posted: 11/26/2020 6:24:38 PM EDT
[#10]
Shaw barrels has them
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Posted: 11/26/2020 6:59:03 PM EDT
[#11]
Well I replaced my order. Don’t know why my backorder was not fulfilled but whatever
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Posted: 11/26/2020 8:06:18 PM EDT
[#12]
I received shipping notification yesterday that my 6mm ARC Bartlein barrel from Craddock Precision has shipped. This was ordered June 20th. Last week I also received my Ascend Armory receiver set, ordered in May, for this build.
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Posted: 11/27/2020 8:40:54 AM EDT
[#13]
I have three of them, two 18" and a 20". The 18" match grade barrel shoots .3 groups. The other 18" shoots .7 groups. The 20" only has a couple hundred rounds through it but is shooting sub MOA, just getting it dialed in. This is with my loads, factory ammo kind of sucks.
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Posted: 11/27/2020 9:56:23 AM EDT
[#14]
Quote HistoryQuoted: I have three of them, two 18" and a 20". The 18" match grade barrel shoots .3 groups. The other 18" shoots .7 groups. The 20" only has a couple hundred rounds through it but is shooting sub MOA, just getting it dialed in. This is with my loads, factory ammo kind of sucks. Sent you an IM. |
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Posted: 11/27/2020 10:20:17 AM EDT
[#15]
I read about this in the recent issue of American Rifleman. Seems like an interesting caliber. Not sure I'd sell my Grendel to buy one, and I don't need an AR-15 in another caliber. But if I didn't have a Grendel I might consider it.
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Posted: 11/27/2020 10:28:47 AM EDT
[#16]
Why, just why?
The Grendel does the needful in that niche. The ARC is just another sales gimmick. When the Grendel came out it had a purpose that was needed to be filled in the AR15 platform the ARC is only needed to increase sales. Only gun pimps on YT are shooting it and it will go the way of the 22Nos and 224Val. Dead out the water. |
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Posted: 11/27/2020 10:47:12 AM EDT
[#17]
Quote HistoryQuoted: Why, just why? The Grendel does the needful in that niche. The ARC is just another sales gimmick. When the Grendel came out it had a purpose that was needed to be filled in the AR15 platform the ARC is only needed to increase sales. Only gun pimps on YT are shooting it and it will go the way of the 22Nos and 224Val. Dead out the water. I hear you. The 6mm ARC was designed to meet the military's need for a cartridge that could balance light weight while still being effective out to 1000 yards. I don't need that. Then again, the Grendel's design premise was basically the same: 7.62x51 long range performance in a lighter cartridge, consolidating both 5.56 and 7.62 attributes in a single platform. |
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Posted: 11/27/2020 11:09:08 AM EDT
[#18]
Quote HistoryQuoted: I hear you. The 6mm ARC was designed to meet the military's need for a cartridge that could balance light weight while still being effective out to 1000 yards. I don't need that. Then again, the Grendel's design premise was basically the same: 7.62x51 long range performance in a lighter cartridge, consolidating both 5.56 and 7.62 attributes in a single platform. Anyone who thinks that they can hit a man size target from 1000yd with an AR platform rifle without perfect ranging and zero wind is delusional. The 5.56 with good ammo gets the job done a the ranges we engage for squad size work. Beyond that let the snipers and DMR guys go at them and then a much more powerful round is needed. It then becomes an energy game. The Grendel was developed to shoot whitetail deer. People want it because it is a more viable cartridge than 5.56 on that target. Anyone who thinks the Grendel sales are driven by target shooting is nuts. It is driven by the deer hunters who want to use an AR15. Like me. |
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Posted: 11/27/2020 11:16:26 AM EDT
[#19]
Quote HistoryQuoted: Why, just why? The Grendel does the needful in that niche. The ARC is just another sales gimmick. When the Grendel came out it had a purpose that was needed to be filled in the AR15 platform the ARC is only needed to increase sales. Only gun pimps on YT are shooting it and it will go the way of the 22Nos and 224Val. Dead out the water. The answer is in the third sentence... I like to tinker. Like I posted from the start, I have various other chamberings (6.5G, 6.8SPC, 6mmx45, .30HRT) and I'm fully aware the 6mm ARC won't do anything the others won't, but this is my only hobby (crafting loads, testing, and what not), well, that and hunting. Hell, for that matter, I have multiple rifles in those chamberings. I'm just looking for another AR15 platform to launch 6mm bullets besides my 6mmx45 and the 6mm ARC looks interesting. Why do a lot of people on this site make such posts and comments? If you're not into trying different rounds, testing things from the load bench, having multiple flavors, that's fine... but to post with such demeanor and attitude isn't necessary. You could have just moved on... |
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Posted: 11/27/2020 11:19:15 AM EDT
[#20]
Quote HistoryQuoted: Anyone who thinks that they can hit a man size target from 1000yd with an AR platform rifle without perfect ranging and zero wind is delusional. The 5.56 with good ammo gets the job done a the ranges we engage for squad size work. Beyond that let the snipers and DMR guys go at them and then a much more powerful round is needed. It then becomes an energy game. The Grendel was developed to shoot whitetail deer. People want it because it is a more viable cartridge than 5.56 on that target. Anyone who thinks the Grendel sales are driven by target shooting is nuts. It is driven by the deer hunters who want to use an AR15. Like me. Please move on...this wasn't a "Is the 6mm ARC a good round" thread. |
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Posted: 11/27/2020 11:20:56 AM EDT
[#21]
Quote HistoryQuoted: Anyone who thinks that they can hit a man size target from 1000yd with an AR platform rifle without perfect ranging and zero wind is delusional. The 5.56 with good ammo gets the job done a the ranges we engage for squad size work. Beyond that let the snipers and DMR guys go at them and then a much more powerful round is needed. It then becomes an energy game. The Grendel was developed to shoot whitetail deer. People want it because it is a more viable cartridge than 5.56 on that target. Anyone who thinks the Grendel sales are driven by target shooting is nuts. It is driven by the deer hunters who want to use an AR15. Like me. Sorry, but this is simply wrong. |
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Posted: 11/27/2020 11:24:17 AM EDT
[#22]
Hey guys... could we please not turn this into something I didn't intend?
I'm just interested in hearing from the few folks who have been playing around with the chambering and seeing what they are achieving. Interested in hearing about bullet and powder combinations and accuracy results. Thanks. |
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Posted: 11/27/2020 11:34:50 AM EDT
[#23]
Sorry, my fault.
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Posted: 11/27/2020 11:45:56 AM EDT
[#24]
I did some looking up on the 6mm arc too, check out Gavin tube on YouTube. He has a few videos on it and loads them as well, might be helpful
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Posted: 11/27/2020 12:46:56 PM EDT
[#25]
I recently had two assembled at Windham Weaponry using Faxon barrels and bolts that I purchased from Brownells. I haven’t had a chance to test them at long distances.
  
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Posted: 11/27/2020 1:27:38 PM EDT
[#26]
Quote HistoryQuoted: I recently had two assembled at Windham Weaponry using Faxon barrels and bolts that I purchased from Brownells. I haven’t had a chance to test them at long distances. https://www.AR15.Com/media/mediaFiles/4382/4034-1606589.jpg https://www.AR15.Com/media/mediaFiles/4382/20200911_101711-1606586.jpg https://www.AR15.Com/media/mediaFiles/4382/3538-1606585.jpg That PR build looks nice, I look forward to a range report. |
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Posted: 11/27/2020 11:53:29 PM EDT
[#27]
I am. I've been a Grendel guy for a long time and will continue to be. Love the round, and always thought it should be the cartridge our infantry was issued.... Which is why I was intrigued by the 6ARC rollout. Apparently they saw something in testing with barrier penetration at long range that put it ahead of 6.5G. Already had 18" and 12.5" BHW grendels and an 11.5 AA.... So I had a little extra money on my last bonus and built a 6ARC upper with an 18" PROOF carbon barrel, Seekins receiver and hand guard, CMC BCG and Raptor CH. Topped off with a NF NX8 2.5-20x50 ffp and ADM QD 20 MOA mount. Kinda trying to approximate the SFs version as best as I could with the scarcity of hardware right now. Have only gone out to 525 yards so far but it was boringly easy with slightly less recoil than my 18" G, flatter trajectory, and less wind drift. Keeping both calibers for sure... doesn't have to be either or. :)
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Posted: 11/28/2020 7:44:31 AM EDT
[#28]
Quote HistoryQuoted: I am. I've been a Grendel guy for a long time and will continue to be. Love the round, and always thought it should be the cartridge our infantry was issued.... Which is why I was intrigued by the 6ARC rollout. Apparently they saw something in testing with barrier penetration at long range that put it ahead of 6.5G. Already had 18" and 12.5" BHW grendels and an 11.5 AA.... So I had a little extra money on my last bonus and built a 6ARC upper with an 18" PROOF carbon barrel, Seekins receiver and hand guard, CMC BCG and Raptor CH. Topped off with a NF NX8 2.5-20x50 ffp and ADM QD 20 MOA mount. Kinda trying to approximate the SFs version as best as I could with the scarcity of hardware right now. Have only gone out to 525 yards so far but it was boringly easy with slightly less recoil than my 18" G, flatter trajectory, and less wind drift. Keeping both calibers for sure... doesn't have to be either or. :) Why would you choose a QD base? |
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Posted: 11/28/2020 7:27:54 PM EDT
[#29]
Quote HistoryQuoted: Why would you choose a QD base? It's my nicest scope so might want to try it on other rifles. |
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Posted: 11/28/2020 7:58:08 PM EDT
[#30]
I like the Grendel but also decided to give the 6mm ARC a try. Since I already have Grendel bolts and magazines all I needed was a barrel. My 20" BA barrel was shipped yesterday from Brownells.
I have dies and brass back ordered. Sierra MatchKing 107gr bullets are on the way. I have a shooting spot with steel set up from 500 to 1200 yards. It will be interesting to see what it can do. |
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Posted: 11/28/2020 8:53:34 PM EDT
[#31]
I’ve shot the 243lbc for a couple years now. It’s a wildcat but for all intents and purposes it’s a 6mm arc. I shoot the 105BTHP at 2,650ish vis LeverRevolution powder.
I have 2 similar AR15s with the 243lbc and 6.5 Grendel. My 243lbc is a little flatter and drifts a little less then the Grendel but I have shot both and made good impacts on my range’s 1,000 yard IPSC. Impacts were pretty impossible to see without fresh paint on the steel. |
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Posted: 11/28/2020 11:53:06 PM EDT
[#32]
Tagged for further interest
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Posted: 11/29/2020 10:25:07 AM EDT
[#33]
Quote HistoryQuoted: I’ve shot the 243lbc for a couple years now. It’s a wildcat but for all intents and purposes it’s a 6mm arc. I shoot the 105BTHP at 2,650ish vis LeverRevolution powder. I have 2 similar AR15s with the 243lbc and 6.5 Grendel. My 243lbc is a little flatter and drifts a little less then the Grendel but I have shot both and made good impacts on my range’s 1,000 yard IPSC. Impacts were pretty impossible to see without fresh paint on the steel. Impacts hard to spot with both or more so the 6mm? I've had days where the mirage makes misses almost impossible to see with my Grendel. Even my 308 shooting 185 Bergers at 2600fps was tough to spot that day. |
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Posted: 11/29/2020 10:28:46 AM EDT
[#34]
Quote HistoryQuoted: Tagged for further interest |
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Posted: 11/29/2020 12:53:48 PM EDT
[#35]
What buffer system does everyone go with for rifle setup? Rifle? Carbine? H? H2?
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Posted: 11/29/2020 2:05:48 PM EDT
[#36]
Quote HistoryQuoted: What buffer system does everyone go with for rifle setup? Rifle? Carbine? H? H2? Mine's going to be intended as a range/target setup so it will be going on a rifle lower. |
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Posted: 11/29/2020 2:19:57 PM EDT
[#37]
 6mm ARC - Getting started with reloading  6mm ARC - Still just getting started Give these a look. A lot of details you are probably looking for are inside. Also you might want to set playback speed to 1.5x. |
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Posted: 11/29/2020 3:11:21 PM EDT
[#38]
Quote HistoryQuoted: Anyone who thinks that they can hit a man size target from 1000yd with an AR platform rifle without perfect ranging and zero wind is delusional. The 5.56 with good ammo gets the job done a the ranges we engage for squad size work. Beyond that let the snipers and DMR guys go at them and then a much more powerful round is needed. It then becomes an energy game. The Grendel was developed to shoot whitetail deer. People want it because it is a more viable cartridge than 5.56 on that target. Anyone who thinks the Grendel sales are driven by target shooting is nuts. It is driven by the deer hunters who want to use an AR15. Like me. Apparently the DOD felt it was a necessary round, and made a contract to develop the cartridge, procure rifles and ammo in that caliber. |
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Posted: 11/29/2020 6:52:33 PM EDT
[#39]
Interesting cartridge. Looking forward to more reviews
I think I'll dive in when/if complete uppers are readily available. CMMG has some listed, but none in stock at any distributors I can find. Hoping for a 16" version to run a 30 cal suppressor for night time yote hunting |
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Posted: 11/30/2020 8:22:02 AM EDT
[#40]
I've had a 6mm Fat Rat for over a decade. It's an NRA High Power rifle and I only shot it for a dozen or so matches. It's like an Ackley Improved 6ARC.
It's a great cartridge and much better in the paper punching world than the 6.5 Grendel. The Grendel does not really do all that well with 140gr class bullets, there is just not enough powder in the case. However the ARC does do well with 105gr class bullets and they can be shot at magazine length. It's not quite a 6BR, but it's close. I'd have no problem shooting deer sized game with one that was loaded with an appropriate bullet. That being said, the bolts are the weak spot. B |
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Posted: 12/2/2020 9:17:53 PM EDT
[#41]
Barrel arrived today, looks good. I also have Brownell's 6.5G Nitride BCG coming, it was $109.99 after discount, not bad considering current events.
Have brass on backorder, not paying the crazy prices for factory ammo. |
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Posted: 12/2/2020 10:21:01 PM EDT
[#42]
Quote HistoryQuoted: I just ordered from Brownells… 18" SPR for $186.43. ETA- Ballistic Advantage bead blasted SS. Regular price? When I looked they were 242. |
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Posted: 12/3/2020 8:23:24 AM EDT
[#43]
Quote HistoryQuoted: Regular price? When I looked they were 242. When I sign into my account, it applies a discount. Not 100% sure but I think it's because I have a C&R license. |
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Posted: 12/4/2020 5:35:53 PM EDT
[#44]
Well just received my barrel. Will update with a complete pic once I got it all built
 Attached File Attached File |
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Posted: 12/4/2020 7:45:02 PM EDT
[#45]
And my 6mm ARC is born! Gonna take her out tomorrow and see what she can do at 200-1000 yards.
 Attached File |
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Posted: 12/4/2020 7:56:07 PM EDT
[#46]
Quote HistoryQuoted: And my 6mm ARC is born! Gonna take her out tomorrow and see what she can do at 200-1000 yards. https://www.AR15.Com/media/mediaFiles/296004/176FCAF5-AF54-4798-8ADB-A5F4C707FA33_jpe-1715029.JPG Looks nice! You hand loading or shooting factory? |
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Posted: 12/4/2020 8:23:30 PM EDT
[#47]
Quote HistoryQuoted: And my 6mm ARC is born! Gonna take her out tomorrow and see what she can do at 200-1000 yards. https://www.AR15.Com/media/mediaFiles/296004/176FCAF5-AF54-4798-8ADB-A5F4C707FA33_jpe-1715029.JPG |
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Posted: 12/4/2020 8:31:03 PM EDT
[#48]
Quote HistoryQuoted: Looks nice! You hand loading or shooting factory? Quote HistoryQuoted: Quoted: And my 6mm ARC is born! Gonna take her out tomorrow and see what she can do at 200-1000 yards. https://www.AR15.Com/media/mediaFiles/296004/176FCAF5-AF54-4798-8ADB-A5F4C707FA33_jpe-1715029.JPG Looks nice! You hand loading or shooting factory? Factory so far. Once I get some once fired brass I’ll reload it |
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Posted: 12/4/2020 9:10:31 PM EDT
[#49]
Quote HistoryQuoted: Well just received my barrel. Will update with a complete pic once I got it all built https://www.AR15.Com/media/mediaFiles/296004/790B00B3-BBD0-440D-AFD7-99CE38CD5B86_jpe-1714871.JPG https://www.AR15.Com/media/mediaFiles/296004/910C988C-C9ED-4148-9B94-F4BAE57800C5_jpe-1714872.JPG Oh man that looks great! Love the Aero build kit :) |
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Posted: 12/5/2020 4:56:18 PM EDT
[#50]
Well I put it against my 223 20” Larue upper. Did slightly better at 100 yards but that’s because I was shooting wolf gold. That larue will stack rounds at 100 yards with 75gr match. Now I need to take it to distance. I can hit 1000 yards with this 223 setup. Seems the gas block was leaking a bit too but I did not have any issues with it cycling suppressed and non suppressed. It was a cheap block.
 Attached File Attached File Attached File Attached File |
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