AR 9mm Reloading

[DDRanch]

Anyone here reload for either AR 9mm pistol or rifle?

 

[GLShooter]

I've done both. I just feed the rifle the same ammo as the pistol. Nothing special there.

 

[sksshooter]

Same here, think im rhnning 4.1g bullseye behind a 115fmj. They run in all my glocks and my ar pistol.

 

[SecondsCount]

Yes. I prefer 124 gain bullets in my loads. Some pistols run better and are more accurate with the heavier bullet.

 

[sksshooter]

Correction im running 4.0 grains of bullseye. Just verified in my notes.

 

[TIMO]

I've done both. I just feed the rifle the same ammo as the pistol. Nothing special there.

Same here, I like 147 gr. bullets as well in my AR.
Tim

 

[Lone Hunter]

Haven’t tried the 147 grain yet but the 124 grain shoot pretty good. Do the same for the rifle as I do a pistol. Funny thing is the 9mm AR recoils harder than the 5.56 or 300 blk. That big bolt movement is deceiving.

 

[ebb]

Ive had trouble with accuracy from my AR9 and with only limited testing it looks like the 147s shoot better out of my gun.

 

[DDRanch]

Same here, think im rhnning 4.1g bullseye behind a 115fmj. They run in all my glocks and my ar pistol.

AOL?

 

[Lone Hunter]

AOL?

I set my AOL with a factory round on the 115,124‘s. I’ll do the same when I get ready to load the 147’s.

 

[sksshooter]

AOL?

we talking about the old dial up internet? not sure what AOL is

 

[Lone Hunter]

OAL. Dyslexia. Fat Fingers Slow Brain, Stupid… Whatever but OVERALL LENGTH Ive been called a lot worse. LOL

 

[Ray123]

Oh! I'm excited! 9mm in an AR...love it! Over 700 ft/lbs of energy....2498 fps available, with 50 gr copper HP bullets. A viable 200 yard weapon in the longer barreled form 10.5" to 14.5".
1740 fps 115 gr bullets...and resized 358 bullets for 185 gr loads...cheap brass cheap, bullets, cheap reloading. I run Glock mags, set up in regular AR with Stern adapter. Handloading is the way to get all this fabulous ammo with a massive variety of bullets, with a lot more punch. Put some Blue Dot behind those 115, 124, & 147 with the AR 10" to 14.5" plus barrel and the volicities soar...velocities are not as impressive in 6" and under...but a big improvement over a short barreled carry pistol.

 

[tommeboy]

115gr factory bullets can really mess p the timing of a AR9. Most of them are a blowback and need extra weight to help hold the bolt closed long enough for the bullet to exit the barrel before it moves. Bolt bounce really sucks too. The blow back action WILL fire out of battery. So if you have a fast trigger finger you could outrun the bolt and have a out of battery discharge. Have done it numerous times. Wear glasses at all times with these.

 

[Ray123]

115gr factory bullets can really mess p the timing of a AR9. Most of them are a blowback and need extra weight to help hold the bolt closed long enough for the bullet to exit the barrel before it moves. Bolt bounce really sucks too. The blow back action WILL fire out of battery. So if you have a fast trigger finger you could outrun the bolt and have a out of battery discharge. Have done it numerous times. Wear glasses at all times with these.

I don't use the AR 9 platform...so I don't know about that one...and I never shoot factory loads. I use a standard AR 15 lower with a Stern insert, snap in, snug up with a couple of screws...with a 9 Oz buffer, and a machined aluminum stop behind the buffer spring to shorten bolt travel...the 9mm works great, like 100% even with a binary trigger...capable of a few 1" groups at 100 yds. Run 9 mm +p+ loads in mine by the thousands. 115 gr RMR at 1740 fps put all 10 rds on steel at 205 laser measured yards.
I went with the Stern insert in the AR 15 after watching a video of the 8000 rd full auto test... running Glock 33 rd mags as fast as they could dump & inset the mag past the full 8000 rds. So I have 2 ...if they didn't work, I wouldn't own them. I've had 2 9mm barrels that were bad out of 4 ...so the quality of some of the barrels can be questioned...one a well known vendor and more expensive barrel, so I bought a reamer from Brownells and reamed the chamber, to the correct size...the other an inexpensive barrel had a step in the transition area between the chamber and bore, just took it off and replaced it with a Wilson Combat 9 mm barrel. Properly set up they are very reliable, pretty accurate, and totally fun.

 

[David Milisock]

Anyone here reload for either AR 9mm pistol or rifle?

I like the question. I have been thinking about a PCC but I haven't moved it to the front burner because I have 30 Carbines.

I would guess that it depends on what 9MM handgun you carry. If you're loading for a ultra compact or full size. The 3" or less barrels would lend themselves to the 115 grain projectiles and fast powders.

I have a Glock 19 and use (I believe) American Select 16 on the burn rate chart, that's a skeet shotgun powder, with 124 grain Hornady XTP and get +P+ velocities, which suggests around 33,000 PSI. I use LongShot, 51 on the burn rate chart in my 357 Sig with Hornady 124 XTP and get 1450 FPS which are European loads I believe 40,000 or 44,000 PSI.

There's alot of powders in between there that might add some gusto to a 9MM PCC. A factory trye +P velocity load usually will produce a European 357 Sig velocity in a 10" barreled PCC.

 

[tommeboy]

I don't use the AR 9 platform...so I don't know about that one...and I never shoot factory loads. I use a standard AR 15 lower with a Stern insert, snap in, snug up with a couple of screws...with a 9 Oz buffer, and a machined aluminum stop behind the buffer spring to shorten bolt travel...the 9mm works great, like 100% even with a binary trigger...capable of a few 1" groups at 100 yds. Run 9 mm +p+ loads in mine by the thousands. 115 gr RMR at 1740 fps put all 10 rds on steel at 205 laser measured yards.
I went with the Stern insert in the AR 15 after watching a video of the 8000 rd full auto test... running Glock 33 rd mags as fast as they could dump & inset the mag past the full 8000 rds. So I have 2 ...if they didn't work, I wouldn't own them. I've had 2 9mm barrels that were bad out of 4 ...so the quality of some of the barrels can be questioned...one a well known vendor and more expensive barrel, so I bought a reamer from Brownells and reamed the chamber, to the correct size...the other an inexpensive barrel had a step in the transition area between the chamber and bore, just took it off and replaced it with a Wilson Combat 9 mm barrel. Properly set up they are very reliable, pretty accurate, and totally fun.

yours will still fire out of battery. ALL but the cmmg radial blowback will. Even the magwell conversions will. The problem is the hammer can still hit the firing pin with the bolt pulled back for about 1/2". It is not shrouded like a regular ar15 bcg is.

 

[Ray123]

yours will still fire out of battery. ALL but the cmmg radial blowback will. Even the magwell conversions will. The problem is the hammer can still hit the firing pin with the bolt pulled back for about 1/2". It is not shrouded like a regular ar15 bcg is.
[/QUOTE
I looked at the radial blow back a few yrs back and decided against it.
Mine will not fire 1/2" out of battery...
I TRIED IT! ...HAVE YOU?
DROP A PRIMED CASE IN THE CHAMBER ...SLOWLY LOWER THE BOLT CARRIER...TOUCH THE BACK OF THE CASE...PULL THE BOLT BACK JUST 10 THOUSANDTHS OF AN INCH SO THE EXTRACTOR DOESN'T TOUCH OR HOLD THE CASE ASGAINST THE BOLT FACE....PULL THE TRIGGER...IT WILL NOT FIRE THE PRIMER...BUT YOU FEEL THE HAMMER MOVING THE BOLT CARRIER FORWARD...BUT IT DOESN'T HIT THE PRIMER WITH ANY FORCE TO EVEN DENT IT.
Sounds like an advertisement... i couldn't get it to fire even inside the extractor after chambering if pulled back 1/16" had to be really close to "in battery" to fire ...no where near a half in nothing happens a 1/2" out...I tried it And its not a free floating firing system, there is a spring pushing back. So it's a pretty safe setup, cause it doesn't fire until the cartridge is inside the extractor AND close to full chambering within the solid case head of the 9mm. Plus the extractor is only over the cartridge extractor groove when the cartridge seats fully into the chamber, unless something like too long COAL stops against the bullet rather than the brass.
Then there is the 8000 rd plus 9MM full auto machinegun 33 rd Glock stick mags one after another, smokin hot, NO malfunctions ..On video...with the mag well conversion.
I have run many thousands of rounds through both of mine ...none have ever fired out of battery...AND I run +p+ loads through them alot. Like 115 gr at 1740 fps is a good AR load but too hot for "my" pistols....I checked.

 

[tommeboy]

Your bolt is the exact same style as the one I use. Like I said it can and will happen. I might just make a vid to show you it can happen. I have had it happen several times.

 

[Ray123]

Your bolt is the exact same style as the one I use. Like I said it can and will happen. I might just make a vid to show you it can happen. I have had it happen several times.

It has never happened to me... and I couldn't make it happen, when I tried, as explained...it will not happen with the extractor not engaged in my rifle, as it would be until chambering. You can look at the video of the full auto 8000 rd torture test had no problem...in full auto. I have had no problem in many thousands of rounds...littery a bucket of brass...some fired at very high speed and hot chamber and barrel...no problem in different guns. But you seem to have a problem, sorry about your situation... but you sound like a product salesman. If I run into a problem in the next 100,000 rds and can not figure out the solution I might give the radial bolt barrel combo a try..but for me it's a solution not needed, at this time, and I've heard of problems with that set up...which steered it away from me in the first place...don't remember exactly what it was...feeding comes to mind. I have no problems .. no need to change anything. The 9MM is very reliable, fun, accurate, and big increase in power...when combined with the AR platform. No need for change when it's hitting every note, like a fine instrument.