mousegun380
Member
Hello,
I'm an experienced reloader and usually a pretty darn good shot with just about any pistol I pick up. However, I just received a new Glock 20 and I sincerely can not hit the side of a barn with it. I worked up some loads for the gun and arrived at the following:
New Starline brass
Federal LPP
Ranier 180gr RNFP
Bullseye 6.6gr
COL 1.260"
Book velocity 1088fps (Hornady book)
They chrono'd not only very close to book velocity, but also extremely consistently:
1092
1077
1088
1061
1092
1100
1093
1069
1106
1081
avg 1086
I went to the range yesterday to have some fun, previously only having had shot the gun when chronographing the rounds. I put 200 rounds through the gun and it just wasn't patterning very well. I was shooting a paper target at 10 yards. I then went to a metallic range and wanted to shoot some gongs. I could not hit a 12" gong at 25 yards to save my life. Some shots were in the dirt and others were over the top.
I returned to the range today with a scientific method. I shot a 10 shot string at 5 yards (center target). On this same paper target, I shot my old trusty 9mm as a control (lower left target). See image 1. Not a great group for that range, but at least in the neighborhood.
Then I shot a 10 shot string at 10 yards. See image 2. Getting worse... Some of the shots look like they might have keyholed, but I think this is actually due to a lack of support on the target stand. They were pretty shot up.
Then I shot a 10 shot string at 15 yards. See image 3. 2 on paper, 8 misses.
The bullets don't seem to be tumbling since the holes all look normal. The gun has a lot of recoil, but it's also huge and heavy so it's manageable. It feels like more than a .45 but less than a .44 mag. I'm at max load with Bullseye, but at a safe velocity, and at a lower velocity than the upper limits of this cartridge. I'm also within spec of the Ranier plated projectiles.
Any insight would be helpful. I'm going to buy a box of factory ammo to test the gun at 15 yards again to eliminate my reloads, but if it doesn't get better I guess I'll need to sell it.
I'm an experienced reloader and usually a pretty darn good shot with just about any pistol I pick up. However, I just received a new Glock 20 and I sincerely can not hit the side of a barn with it. I worked up some loads for the gun and arrived at the following:
New Starline brass
Federal LPP
Ranier 180gr RNFP
Bullseye 6.6gr
COL 1.260"
Book velocity 1088fps (Hornady book)
They chrono'd not only very close to book velocity, but also extremely consistently:
1092
1077
1088
1061
1092
1100
1093
1069
1106
1081
avg 1086
I went to the range yesterday to have some fun, previously only having had shot the gun when chronographing the rounds. I put 200 rounds through the gun and it just wasn't patterning very well. I was shooting a paper target at 10 yards. I then went to a metallic range and wanted to shoot some gongs. I could not hit a 12" gong at 25 yards to save my life. Some shots were in the dirt and others were over the top.
I returned to the range today with a scientific method. I shot a 10 shot string at 5 yards (center target). On this same paper target, I shot my old trusty 9mm as a control (lower left target). See image 1. Not a great group for that range, but at least in the neighborhood.
Then I shot a 10 shot string at 10 yards. See image 2. Getting worse... Some of the shots look like they might have keyholed, but I think this is actually due to a lack of support on the target stand. They were pretty shot up.
Then I shot a 10 shot string at 15 yards. See image 3. 2 on paper, 8 misses.
The bullets don't seem to be tumbling since the holes all look normal. The gun has a lot of recoil, but it's also huge and heavy so it's manageable. It feels like more than a .45 but less than a .44 mag. I'm at max load with Bullseye, but at a safe velocity, and at a lower velocity than the upper limits of this cartridge. I'm also within spec of the Ranier plated projectiles.
Any insight would be helpful. I'm going to buy a box of factory ammo to test the gun at 15 yards again to eliminate my reloads, but if it doesn't get better I guess I'll need to sell it.