AR15.Com Archives
 9 X 25 mm Dillon
1950Target  [Member]
2/6/2009 1:11:10 AM
This would seem to have considerable potential. It is the 10mm necked down to 9 and factory loaded ammo runs pretty hot, 147 gr at 1500 froma 5" GLOCK 20. In a 16" Carbine it should be no mean feat to get 1600 with a 158, much mor power than a .357 mag in a lever action carbine and in a semi auto. The GG mags are being used for 10mm getting 34-5 rounds, and either the Bazooka Brothers or MGI lower would be a good basis.

Thoughts?
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StealthyBlagga  [Member]
2/6/2009 1:47:22 AM
The 9x25 Dillon cartridge was developed as an IPSC competition round for Open division race guns. IIRC Rob Leatham led the charge. The idea was to cram a metric shitload of super-slow burning powder (e.g. Viht N110) into a huge case, then push a light (115grn or less) 9mm bullet at Major power factor speeds (>1500fps... in those days Major PF was 175). The gas volume was so great that the compensator could literally push the muzzle down. It worked very well, but was ultimately an evolutionary dead-end because compensator and powder technology let us get similar performance from the less exotic .38Super, with more rounds in the mag, with less blast/vibration, and at a lower cost. Also, the bottle necked 9x25 case was a royal PITA to reload as it needed to be lubed and trimmed like rifle brass. I doubt anybody on the IPSC circuit even uses one now.

I suppose it could make sense as a specialty pistol round for punching through body armor, but I would have thought the 5.56 round would do the job much better if you were going to a rifle platform. If you wanted a heavier bullet, you have .300Fireball and similar wildcat rifle rounds to choose from too. At the end of the day, the 9x25 is still just a pistol round.
ronaldmwilliams  [Team Member]
2/6/2009 7:47:53 AM
Originally Posted By 1950Target:
This would seem to have considerable potential. It is the 10mm necked down to 9 and factory loaded ammo runs pretty hot, 147 gr at 1500 froma 5" GLOCK 20. In a 16" Carbine it should be no mean feat to get 1600 with a 158, much mor power than a .357 mag in a lever action carbine and in a semi auto. The GG mags are being used for 10mm getting 34-5 rounds, and either the Bazooka Brothers or MGI lower would be a good basis.

Thoughts?


Im with you

This is my next project. This round will be amazing in the AR15 platform. All the pressures of this round will be put to good use in the AR15. DI/gas operated of course

I am going to use the 357sig dies & reamer. QL gies me nearly 1700fps with the 147g 9mm bulllet out of a 10.5" brl. The pps43 mags will feed it. It is nothing more than a slightly larger version of the 7.62x25 Tok. I am ordering a 20 twist brl to work with the extra velocity of the 9x25. I plan to get this done over the next 4-6 weeks. Cant wait to pull the trigger on this puppy

vermont2nd  [Team Member]
2/6/2009 8:19:45 AM
Why did I have to see this? Now I need to subscribe to this one as well!!! Let us know what you come up with.
ronaldmwilliams  [Team Member]
2/6/2009 7:28:06 PM
Originally Posted By vermont2nd:
Why did I have to see this? Now I need to subscribe to this one as well!!! Let us know what you come up with.


Sorry but I have had my eye on this one for some time. If I were going to pull the trigger on a 9mm upper this one is it.
vermont2nd, turn on the parental control This is the stuff I live for!!!!!!!!!! Since were not talking about it, what type of setup would you like to see


grendelbane  [Member]
2/7/2009 5:09:04 AM
This idea has intrigued me for a long time also. I have a 357 SIG barrel for my Delta Elite, and usually load the cartridges 1.260". The 9x25mm has a little bit longer case and more capacity. Loaded to Tok length, just a bit more room for powder.

Still, I also like the idea of a 9x23mm AR. The 9x23mm fits well into the PPS43 mags. 9x23mm is a little bit less tolerant of different type bullets though. The Hornady 147 grain JHP is the only one I can get to seat in the 9x23mm case, for example, whereas my 357 SIG Long loads can use most any bullet I have ever tried.

Maybe I should build one of each?
ronaldmwilliams  [Team Member]
2/7/2009 5:32:57 AM
Is the 9x23 just a lengthened 9mm case with a thicker web for higher pressure? I wonder if it can be cut with a 9mm reamer? HMMMMMMMMMMMM more posibilities! Im not hard to find

I like the 9x25 because its a botleneck & it looks like it was made for the pps43 mags.
grendelbane  [Member]
2/7/2009 6:04:32 AM
That is a lot like asking if Angelina Jolie is a regular woman with slightly fuller lips! Technically, the answer may be yes, but their is a lot more to the story.

I load my 9x23mm cases with a set of 9x19 dies and shell holder. The extra length is indeed the big difference externally. Internally, it must be very thick indeed. I have never seen a case even begin to bulge, even though I know that some of the pressures must be extremely high. My favorite load for the 147 grain XTP hits 1340 FPS out of a 5" Gov't model barrel.

34 rounds stack in a PPS 43 mag just as neat as you could possibly want. My mags will accept 35 rounds of 7.62 x 25, so it must be a hair bit larger in diameter. I forget how many 357 SIGs I could get in the mag, but think it was about 20.

I wish I didn't like odd cartridges fired from weapons which fling empty brass in all directions!
shindawia6  [Member]
2/7/2009 3:29:29 PM




was i getting another 100ish more fps out of the ar
vermont2nd  [Team Member]
2/7/2009 3:35:48 PM
Originally Posted By ronaldmwilliams:
Originally Posted By vermont2nd:
Why did I have to see this? Now I need to subscribe to this one as well!!! Let us know what you come up with.


Sorry but I have had my eye on this one for some time. If I were going to pull the trigger on a 9mm upper this one is it.
vermont2nd, turn on the parental control This is the stuff I live for!!!!!!!!!! Since were not talking about it, what type of setup would you like to see




Well since you asked, I am really interested in the 45 acp . In all seriousness though, I am really interested in hearing more about the 9x25. I would also like to see something done in 9 x 39mm, I believe it a Russian round necked up from a 7.62 x 39. It is capable of launching a 250gr projectile at sub-sonic speeds!
ronaldmwilliams  [Team Member]
2/19/2009 7:36:16 AM
The 9x25 will breath fire today I just need to get the loads & port configured. Anyone have some load data for the 147g HP?
sititunga  [Member]
2/19/2009 8:28:36 AM
Why not look at the 224 BOZ. It's a 10mm necked down to 224, it was originally developed in the late 90s for the MP5.
ronaldmwilliams  [Team Member]
2/19/2009 9:08:59 AM
Originally Posted By sititunga:
Why not look at the 224 BOZ. It's a 10mm necked down to 224, it was originally developed in the late 90s for the MP5.


I have been asked about the Bozz. Were would you get the dies? 22 Reed is already available. I dont see a big gain in performance with the Bozz.

sititunga  [Member]
2/19/2009 9:48:33 AM
Originally Posted By ronaldmwilliams:
Originally Posted By sititunga:
Why not look at the 224 BOZ. It's a 10mm necked down to 224, it was originally developed in the late 90s for the MP5.


I have been asked about the Bozz. Were would you get the dies? 22 Reed is already available. I dont see a big gain in performance with the Bozz.



The .224 BOZ was developed by Civil Defense Supply, located in the United Kingdom, and was begun as a Special Forces ammunition project for police and military use. In short, the concept was to design a new pistol cartridge that would deliver significantly more power than the current 9mm Parabellum as used in both handguns and submachine guns.

It was decided that the bullet chosen be one of proven design and so the 5.56mm round as used by NATO forces was selected. Not only was there a significant amount of data already collected on this bullet design, but it was also available in numerous configurations such as armor piercing, tracer, ball, and frangible. In looking for a starting point for the cartridge case both the 9mm Parabellum and the .40 S&W were looked at and then quickly dismissed as possible candidates because both lacked the case capacity to generate the required energy and velocity. The 10mm Auto was then chosen both for its power potential and existing firearm platforms readily convertible to the new cartridge.

The original test-bed for the .224 BOZ was a Colt Delta Elite. Using lightweight 50gn 5.56mm bullets velocities ranging from 1,750fps to 2,200fps were obtained. Eventually the Glock 20 was chosen as the foundation for the .224 BOZ PPW (Personal Protection Weapon) due to its "positive lock between barrel and frame." (It must be noted though that in this caliber a 5.5" barrel is considered "compact" and a 6.5" barrel is "standard.") For the carbine/submachine gun platform the HK MP5 was selected Not only is the MP5 series of submachine guns one of the most popular around the world, but it is also available in 10mm (though no longer in production). Royal Ordnance and Heckler & Koch worked together to develop the .224 BOZ PDW (Personal Defense Weapon) which is basically an HK MP5/10 chambered for the .224 BOZ round.

http://www.militaryphotos.net/forums/showthread.php?t=101855

Reloading dies could be made available by any of the reloading companies. The neat thing about the BOZ is that it is compatible with standard type platform.



sititunga  [Member]
2/19/2009 10:32:20 AM
Originally Posted By shindawia6:
http://i41.tinypic.com/sp90rc.jpg

http://i42.tinypic.com/3wnxg.jpg

was i getting another 100ish more fps out of the ar


What mags are you running with that?

cfbigdaddy  [Team Member]
2/19/2009 12:32:25 PM
Originally Posted By ronaldmwilliams:
The 9x25 will breath fire today I just need to get the loads & port configured. Anyone have some load data for the 147g HP?



IM sent.

ronaldmwilliams  [Team Member]
2/19/2009 1:28:39 PM
Well it runs One hell of a fireball on the 115g HP in front of 14g of W296. Loud also! Zero pressure signs. Not testing many of those in the back yard. Need to open port a couple thousands but almost done. Need a little faster powder or heavyer bullet. Too much unburnt powder residue.
ronaldmwilliams  [Team Member]
2/19/2009 5:46:30 PM
It feeds from the pps mags & magblock. Ill give it a solid test tuesday at the range. Just cant shoot it out back anymore. This may not be the ultimate CQB round. The blast is outrageous
1950Target  [Member]
2/19/2009 6:16:10 PM
I have long been a big fan of the .30 Carbine. It is a very economical cartridge to load for and its only weakness is bullet weight and design. It is a very capable 150 self-defense cartridge and varmint round.

I think the 9 X 25 with a 158 Gold Dot in a 16" barrel could exceed the 30 carbine and be a very viable 150-200 yard varmint (4 leg and 2 leg varieties) cartridge. In the AR platform it can become a handy powerful little package for a variety of uses.

How many rounds can you run in the PPSh mags? I wonder if the GG might not be another option although I know the mag lips will need a bit o'english applied to get them to work. I know 10mm will run 35 rds. in a GG with minimal massaging of the GG lips.

Who makes the PPSh block you're using? Do you have a kink? Who has the best deals on PPSh mags right now?

Please keep us posted on your work with the 9 X 25!
475AR10  [Member]
2/19/2009 8:01:00 PM
Originally Posted By ronaldmwilliams:
Well it runs One hell of a fireball on the 115g HP in front of 14g of W296. Loud also! Zero pressure signs. Not testing many of those in the back yard. Need to open port a couple thousands but almost done. Need a little faster powder or heavyer bullet. Too much unburnt powder residue.


I do not think 296 is the best powder for CQB, unless you want to burn down the place after.

1950Target  [Member]
2/19/2009 9:01:15 PM
Originally Posted By 475AR10:
Originally Posted By ronaldmwilliams:
Well it runs One hell of a fireball on the 115g HP in front of 14g of W296. Loud also! Zero pressure signs. Not testing many of those in the back yard. Need to open port a couple thousands but almost done. Need a little faster powder or heavyer bullet. Too much unburnt powder residue.


I do not think 296 is the best powder for CQB, unless you want to burn down the place after.



I've always thought that was one of 296's best attributes, even if you miss 'em with the lead, you burn, blind, and deafen them with the incandescent gas cloud!



GarrettJ  [Team Member]
2/19/2009 9:13:06 PM
Originally Posted By sititunga:
Why not look at the 224 BOZ. It's a 10mm necked down to 224, it was originally developed in the late 90s for the MP5.


Not to poo-pooh on your idea, but you are suggesting a wildcat .22 caliber cartridge in an AR15 that goes around 1000 fps. slower than a standard .223 and requires a special mag block in the magwell? Hmmm. Let me think about that one for a while.

(the one time I got to shoot a .224 BOZ in an STI handgun was pretty cool, though. I was easily hitting bowling pins offhand at 80 yds. with almost zero recoil.)
1950Target  [Member]
2/19/2009 9:24:19 PM
The BOZ is an interesting cartridge but not really all that practical with the FN 5.7 around. The REEDER has the advantage of using the same mags (and brass) as the TOK so a little bit more practical if you also fancy a TOK upper.

There are lots of cool possibilities and we are fortunate enough to live where we have the freedom to explore their possibilities, providing we have the money and leisure time to do so!
ronaldmwilliams  [Team Member]
2/20/2009 7:00:37 AM
Originally Posted By 475AR10:
Originally Posted By ronaldmwilliams:
Well it runs One hell of a fireball on the 115g HP in front of 14g of W296. Loud also! Zero pressure signs. Not testing many of those in the back yard. Need to open port a couple thousands but almost done. Need a little faster powder or heavyer bullet. Too much unburnt powder residue.


I do not think 296 is the best powder for CQB, unless you want to burn down the place after.



I cant think of a better way to light up a dark hallway
Kaliburz  [Team Member]
2/22/2009 11:16:47 PM
Originally Posted By shindawia6:
http://i41.tinypic.com/sp90rc.jpg

http://i42.tinypic.com/3wnxg.jpg

was i getting another 100ish more fps out of the ar



I forgot Kurt did one.... been a while since that post was around.
ronaldmwilliams  [Team Member]
2/23/2009 9:40:12 AM
Just got to thinking. This is not the 9x25! I am using a 357sig reamer so this is a 357sig magnum I have QL data with N105 that is pushing the 147g Speer GD to almost 1700fps from a 10.5" brl. I will see if I can get some real #s on this tomorrow.
Clarkma  [Member]
2/23/2009 11:51:22 AM
No way can the 9x25 handle pressure like a 7.62x25mm Tokarev.

If one could find some old Win Clean 10mm brass, then maybe, but I have been unable to find any.

The 10mm brass available has a large primer pocket and deep extractor groove, making it the weakest modern cartridge.

The second weakest is the 7.62x39mm made with large Boxer primer pocket.

The strongest cartridge in existence is the 32S&W, which is only registered at 15,000 cup or psi, because the registration is not just the cartridge, but the guns too.
shindawia6  [Member]
2/23/2009 5:27:10 PM
http://i41.tinypic.com/sp90rc.jpg

http://i42.tinypic.com/3wnxg.jpg

was i getting another 100ish more fps out of the ar



I forgot Kurt did one.... been a while since that post was around
.

i use 41ae uzi mags. kurt put a notch in the back of the mag so the mag will click into the mag block.
JPN  [Team Member]
2/23/2009 8:26:46 PM
Originally Posted By Clarkma:
No way can the 9x25 handle pressure like a 7.62x25mm Tokarev.

If one could find some old Win Clean 10mm brass, then maybe, but I have been unable to find any.

The 10mm brass available has a large primer pocket and deep extractor groove, making it the weakest modern cartridge.

The second weakest is the 7.62x39mm made with large Boxer primer pocket.

The strongest cartridge in existence is the 32S&W, which is only registered at 15,000 cup or psi, because the registration is not just the cartridge, but the guns too.



What about using 6.8 Rem SPC brass?

It would require a bit of tinkering to find the right trim length for it to use a 9mm projectile and still fit in a 6.8 mag, but the result would be a caliber that would use an existing AR mag (no magwell adapter). It should also have plenty of case capacity, and the brass shouldn't have a problem with the pressures that could be used in a gas operated AR platform. The modified brass would have a slight shoulder (I ran a piece of 6.8 brass partially into my 9mm sizing die, just to check), so there shouldn't be any headspacing problems from completely eliminating the shoulder.

Well?
ronaldmwilliams  [Team Member]
2/24/2009 7:17:06 AM
Originally Posted By JPN:
Originally Posted By Clarkma:
No way can the 9x25 handle pressure like a 7.62x25mm Tokarev.

If one could find some old Win Clean 10mm brass, then maybe, but I have been unable to find any.

The 10mm brass available has a large primer pocket and deep extractor groove, making it the weakest modern cartridge.

The second weakest is the 7.62x39mm made with large Boxer primer pocket.

The strongest cartridge in existence is the 32S&W, which is only registered at 15,000 cup or psi, because the registration is not just the cartridge, but the guns too.



What about using 6.8 Rem SPC brass?

It would require a bit of tinkering to find the right trim length for it to use a 9mm projectile and still fit in a 6.8 mag, but the result would be a caliber that would use an existing AR mag (no magwell adapter). It should also have plenty of case capacity, and the brass shouldn't have a problem with the pressures that could be used in a gas operated AR platform. The modified brass would have a slight shoulder (I ran a piece of 6.8 brass partially into my 9mm sizing die, just to check), so there shouldn't be any headspacing problems from completely eliminating the shoulder.

Well?


I have to ask why? The 10mm case will handle 37.5k psi. My AR brl has a fully suported chamber. That is enough to get the 147g GD up to 1700fps & the 100g pills to 2000fps. This is with shelf items. Only "special" item is the mag block & those should be available soon. Custom dies, reamer & case prep. Seems like an awfull lot to push the 9mm bullet faster and get it to fit in an AR mag.
JPN  [Team Member]
2/24/2009 11:17:21 AM
Originally Posted By ronaldmwilliams:
Originally Posted By JPN:

What about using 6.8 Rem SPC brass?

It would require a bit of tinkering to find the right trim length for it to use a 9mm projectile and still fit in a 6.8 mag, but the result would be a caliber that would use an existing AR mag (no magwell adapter). It should also have plenty of case capacity, and the brass shouldn't have a problem with the pressures that could be used in a gas operated AR platform. The modified brass would have a slight shoulder (I ran a piece of 6.8 brass partially into my 9mm sizing die, just to check), so there shouldn't be any headspacing problems from completely eliminating the shoulder.

Well?


I have to ask why? The 10mm case will handle 37.5k psi. My AR brl has a fully suported chamber. That is enough to get the 147g GD up to 1700fps & the 100g pills to 2000fps. This is with shelf items. Only "special" item is the mag block & those should be available soon. Custom dies, reamer & case prep. Seems like an awfull lot to push the 9mm bullet faster and get it to fit in an AR mag.


Considering the number of wildcats that AR's have been chambered for, case prep shouldn't be much of a concern for those that would be interested (I've got roughly 600 pieces of .223 brass that I'm gradually making .300-221 brass out of, and another 200 pieces set aside for a .22 Reed Express barrel that I'll eventually order, along with 300 or 400 pieces of 10mm Mag brass for a .338Spectre barrel that's still waiting for me to squeeze it into the budget).

The reamer and dies would be an issue, but I doubt it would be any more of an issue than it was for the first .22 Reed Express or various other wildcats.

Why?

Hmm...

Just how fast can a 9mm bullet safely be pushed out of an AR-15? Is that a question worth answering? I think it's worth at least the time required to do enough tinkering to get an estimate on the case volume, so that the numbers can be run through Quickload (yet another small project added to the list).
EternalVigilance  [Team Member]
2/24/2009 11:49:03 AM
holy shit I love guns and need more of them
ronaldmwilliams  [Team Member]
2/24/2009 5:15:19 PM
Well the 355RMW(357sig magnum) was a little slower than I thought. Max loads pushed the 147s to 1550fps & the 115s to 1850fps. Less than I wanted to see but still good. Accuracy was awsome. Recoil was completely nonexistant. Closest thing to a 22lr I have ever fired. This would be unbeleavable in full auto!
I need to cut a custom bolt because the 6.8 with the bevel face allows the round to get under the ejector when feeding from the pps43 mags. May mod the ejector some also. Center feed will not be an issue & I may convert a GG mag for this one. Still alot of fun to shoot.
vermont2nd  [Team Member]
2/24/2009 6:23:37 PM
Originally Posted By ronaldmwilliams:
Well the 355RMW(357sig magnum) was a little slower than I thought. Max loads pushed the 147s to 1550fps & the 115s to 1850fps. Less than I wanted to see but still good. Accuracy was awsome. Recoil was completely nonexistant. Closest thing to a 22lr I have ever fired. This would be unbeleavable in full auto!
I need to cut a custom bolt because the 6.8 with the bevel face allows the round to get under the ejector when feeding from the pps43 mags. May mod the ejector some also. Center feed will not be an issue & I may convert a GG mag for this one. Still alot of fun to shoot.


I can not wait to hear more about this one. When you say that accuracy was awesome, what distance were you firing it at? At what distance do you think you will see accuracy drop off? I am glad I have a tax return coming soon.
ronaldmwilliams  [Team Member]
2/25/2009 7:11:04 AM
Originally Posted By vermont2nd:
Originally Posted By ronaldmwilliams:
Well the 355RMW(357sig magnum) was a little slower than I thought. Max loads pushed the 147s to 1550fps & the 115s to 1850fps. Less than I wanted to see but still good. Accuracy was awsome. Recoil was completely nonexistant. Closest thing to a 22lr I have ever fired. This would be unbeleavable in full auto!
I need to cut a custom bolt because the 6.8 with the bevel face allows the round to get under the ejector when feeding from the pps43 mags. May mod the ejector some also. Center feed will not be an issue & I may convert a GG mag for this one. Still alot of fun to shoot.


I can not wait to hear more about this one. When you say that accuracy was awesome, what distance were you firing it at? At what distance do you think you will see accuracy drop off? I am glad I have a tax return coming soon.


At 25yds off a woden block with open sights. All the 115-147g loads would group to the same point of impact. After 20-30 rnds I had one nice cluster around 1.5". Not bad considering all the diferent loads I fired. When testing loads I normaly dont concentrate on the target. I try to watch the ejection out of the corner of my eye to see what the loads are doing if you know what I mean.
While I was at it I put 20 breakin loads down my custom 16.5" AR15 in 338BR. It has a scope but when all 20 go into one hole lets just say I am very happy
vermont2nd  [Team Member]
2/25/2009 8:58:42 AM
Originally Posted By ronaldmwilliams:
Originally Posted By vermont2nd:
Originally Posted By ronaldmwilliams:
Well the 355RMW(357sig magnum) was a little slower than I thought. Max loads pushed the 147s to 1550fps & the 115s to 1850fps. Less than I wanted to see but still good. Accuracy was awsome. Recoil was completely nonexistant. Closest thing to a 22lr I have ever fired. This would be unbeleavable in full auto!
I need to cut a custom bolt because the 6.8 with the bevel face allows the round to get under the ejector when feeding from the pps43 mags. May mod the ejector some also. Center feed will not be an issue & I may convert a GG mag for this one. Still alot of fun to shoot.


I can not wait to hear more about this one. When you say that accuracy was awesome, what distance were you firing it at? At what distance do you think you will see accuracy drop off? I am glad I have a tax return coming soon.


At 25yds off a woden block with open sights. All the 115-147g loads would group to the same point of impact. After 20-30 rnds I had one nice cluster around 1.5". Not bad considering all the diferent loads I fired. When testing loads I normaly dont concentrate on the target. I try to watch the ejection out of the corner of my eye to see what the loads are doing if you know what I mean.
While I was at it I put 20 breakin loads down my custom 16.5" AR15 in 338BR. It has a scope but when all 20 go into one hole lets just say I am very happy


I think I know what you mean about watching what is going on with the ejection, it sounds VERY promising. I am really interested in what she does out at longer ranges.

I think anyone would be pleased with 20 rounds firing into the same hole, and am hoping that you get the bolts soon to handle the higher pressures; also I can't wait to see what happens at longer ranges, maybe from a 16" bl?

Your threads occupy a good amount of space on my subscription page, and I look forward to hearing more as you get these developed.
ronaldmwilliams  [Team Member]
2/25/2009 7:39:18 PM
Originally Posted By JPN:
Originally Posted By ronaldmwilliams:
Originally Posted By JPN:

What about using 6.8 Rem SPC brass?

It would require a bit of tinkering to find the right trim length for it to use a 9mm projectile and still fit in a 6.8 mag, but the result would be a caliber that would use an existing AR mag (no magwell adapter). It should also have plenty of case capacity, and the brass shouldn't have a problem with the pressures that could be used in a gas operated AR platform. The modified brass would have a slight shoulder (I ran a piece of 6.8 brass partially into my 9mm sizing die, just to check), so there shouldn't be any headspacing problems from completely eliminating the shoulder.

Well?


I have to ask why? The 10mm case will handle 37.5k psi. My AR brl has a fully suported chamber. That is enough to get the 147g GD up to 1700fps & the 100g pills to 2000fps. This is with shelf items. Only "special" item is the mag block & those should be available soon. Custom dies, reamer & case prep. Seems like an awfull lot to push the 9mm bullet faster and get it to fit in an AR mag.


Considering the number of wildcats that AR's have been chambered for, case prep shouldn't be much of a concern for those that would be interested (I've got roughly 600 pieces of .223 brass that I'm gradually making .300-221 brass out of, and another 200 pieces set aside for a .22 Reed Express barrel that I'll eventually order, along with 300 or 400 pieces of 10mm Mag brass for a .338Spectre barrel that's still waiting for me to squeeze it into the budget).

The reamer and dies would be an issue, but I doubt it would be any more of an issue than it was for the first .22 Reed Express or various other wildcats.

Why?

Hmm...

Just how fast can a 9mm bullet safely be pushed out of an AR-15? Is that a question worth answering? I think it's worth at least the time required to do enough tinkering to get an estimate on the case volume, so that the numbers can be run through Quickload (yet another small project added to the list).


I can tell you I have pushed the 155g 40cal XTP to nearly 2300fps. It held up fine but any contact inside 50yds turns it into shrapnel This is why I felt a 115g 9mm at extreme velocity would be great were overpenitration is not wanted. I need to test the 115g at 1800fps & see what happens.

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