Desmo412 Posted June 25, 2013 Share Posted June 25, 2013 I should be receiving my JP GMR-13 within the next week or so. I will be using this gun primarily for falling steel matches, but I would also like to see what kind of accuracy I can squeeze out of it at 100 yards. I have been shooting 9-major, so I have a TON of different powders and bullets. Barrel is a 14.5" 1:10 Twist. I have everything from 90gr Frangibles to 160gr Bayous. Rifle will probably have a C-more slide ride installed with a 2 MOA dot, so comments about bullet weight vs. dot movement is will be helpful also. For the 100 yard shooting, I will either install a 6-24 BSA scope I received for free, or spring for a Burris 1-4 MTAC. I will be suppressing this rifle eventually, but since they didn't offer a 16" barrel and I couldn't find a suitable suppressor adapter to have pinned on the barrel, that will have to wait until I can afford a second barrel or upper. Please provide any data you have laying around. I'm sure just about any load will work for falling steel at <25 yards. It's the 100 yard accuracy load that has my interest. I like the challenge of squeezing accuracy out of a load that wasn't meant to be shot at 100 yards. Link to comment Share on other sites More sharing options...
DyNo! Posted June 25, 2013 Share Posted June 25, 2013 I shoot "suspect" and ammo in the pull box through my 9mm AR exclusively. Keep it spicy near the max loads and you'll be fine. I shot mine out to 300 yards and hit man sized targets reliably with 105 grain bullets and a case full of HS-6. Link to comment Share on other sites More sharing options...
MarkCO Posted June 25, 2013 Share Posted June 25, 2013 When I was shooting 3Gun with my Marlin Camp 9, I was using a 115 JHP over 6.9 grains of HS6 at about 1430 fps. I was able to shoot about 2.5 MOA out to 200 yards. I tried some 90 and 95 grain jacketed up around 1800 fps, but the accuracy was worse. Link to comment Share on other sites More sharing options...
jmorris Posted June 25, 2013 Share Posted June 25, 2013 I use my minor 9mm loads in mine 3.1 g of N310 with a Berrys 147@ 1.160" they are subsonic and work fine in my suppressed AR. Link to comment Share on other sites More sharing options...
LikesToShoot Posted June 25, 2013 Share Posted June 25, 2013 For my Beretta CX4 Storm I've tried several bullets and lot's of different powders. I'm very pleased with MG 115 JHP over 6.4gr power pistol. It runs a little over 1400 FPS out the Beretta. Link to comment Share on other sites More sharing options...
Jaxshooter Posted June 25, 2013 Share Posted June 25, 2013 In my experience thru 3 different 9 mm AR-15s. (Rock River, Colt and Custom built.) I have tested numerous loads and found that 115 gr bullets just will not group well. If you want to shoot a light bullet the 124-125 gr bullet seems to be the starting point for accurate loads. My current load uses a 125 gr JHP. I have not found any better accuracy with 147s or 160s. Link to comment Share on other sites More sharing options...
Matteye Posted October 21, 2013 Share Posted October 21, 2013 I should be receiving my JP GMR-13 within the next week or so. I will be using this gun primarily for falling steel matches, but I would also like to see what kind of accuracy I can squeeze out of it at 100 yards. I have been shooting 9-major, so I have a TON of different powders and bullets. Barrel is a 14.5" 1:10 Twist. I have everything from 90gr Frangibles to 160gr Bayous. Rifle will probably have a C-more slide ride installed with a 2 MOA dot, so comments about bullet weight vs. dot movement is will be helpful also. For the 100 yard shooting, I will either install a 6-24 BSA scope I received for free, or spring for a Burris 1-4 MTAC. I will be suppressing this rifle eventually, but since they didn't offer a 16" barrel and I couldn't find a suitable suppressor adapter to have pinned on the barrel, that will have to wait until I can afford a second barrel or upper. Please provide any data you have laying around. I'm sure just about any load will work for falling steel at <25 yards. It's the 100 yard accuracy load that has my interest. I like the challenge of squeezing accuracy out of a load that wasn't meant to be shot at 100 yards. Have you tried out your GMR 13 yet? If so what kind of accuracy are you getting with what loads? I am also curious what the magwell looks like. Beveled? Link to comment Share on other sites More sharing options...
gregshin Posted October 21, 2013 Share Posted October 21, 2013 I have a custom 9mm build with a spike's 16 inch barrel with an A2 flash hider. I run a Burris Fastfire 2 optic on it. My load for this was 4.4gr of HP38 with 124gr Xtreme plated bullets at 1.115OAL. I recommend loading long. This was was 10 rounds at 50 yards. Link to comment Share on other sites More sharing options...
rowdyb Posted October 28, 2013 Share Posted October 28, 2013 I have a dedicated CMMG lower, 9mm, and a RR 9mm upper, 16" barrel. My load is xtreme plated 147gr bullet. 3.2 grains of Titegroup, Federal spp, 1.140 overall length. I average 900fps with this load out of the rifle and about 870fps out of my glock 34. This is my go-to gun for the steel matches here run by the uspsa club that allows pistol caliber carbines. Never an issue. Link to comment Share on other sites More sharing options...
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