I have been wrestling with my Glock 20 in 10mm.
I regularly shoot 165 grain bullets, because that's what I put in it when I carry. I used to use a healthy dose of AA9, to get near the velocity of my carry load.
Due to the Great Obama Induced Powder Drought, AA9 was hard to find, so I started messing around with different powders. Tried AA7, which seemed to work well, got close to the same velocity, etc. However, about every 50 rounds or so I'd get a failure to feed. The slide would start back forward after recoiling all the way back, but wouldn't pick up the next round in the mag. Slide would stop about 1/3 of the way back. I could easily re-rack the slide, but I was not happy about this.
I decided to try Power Pistol. Using a high velocity (but still within recommended powder amount) load, the bullets didn't group at all. Could barely keep everything on an 8 x 11 sheet of paper. Disgraceful. Also got a couple of failures to feed as I did with AA7.
I've replaced the recoil spring and am using brand new Glock magazines. The gun is very well cleaned before every trip to the range. Everything on the gun is factory stock. I'm not limp wristing and have a serious crush grip when I fire the pistol. This failure to feed thing has left me baffled. For years, I've shot factory ammo and AA9 handloads through the G20, with no issues.
The only thing I can think of is, there must be instances where a semi-auto doesn't like a particular powder. AA9 is slower burning than AA7 and definitely slower than Power Pistol. So maybe that's the problemo. I've got plenty of AA9 now, and think I will just stick with that.
What do you all think? Is it possible that a particular powder, assuming the same bullet and same velocity, just won't reliably cycle a slide? I know people who use all kinds of different burn rate powders for other semi-autos in other calibers without issues. Of course, those loads aren't usually on the outside edge like my 10mm loads tend to be.
By the way, this little exercise has reminded me, yet once again, why I prefer revolvers. I don't go through this whenever I switch powder for ammo for any of my wheelguns. I plan on getting the G20 running, and then going back to my trusted wheels.
I regularly shoot 165 grain bullets, because that's what I put in it when I carry. I used to use a healthy dose of AA9, to get near the velocity of my carry load.
Due to the Great Obama Induced Powder Drought, AA9 was hard to find, so I started messing around with different powders. Tried AA7, which seemed to work well, got close to the same velocity, etc. However, about every 50 rounds or so I'd get a failure to feed. The slide would start back forward after recoiling all the way back, but wouldn't pick up the next round in the mag. Slide would stop about 1/3 of the way back. I could easily re-rack the slide, but I was not happy about this.
I decided to try Power Pistol. Using a high velocity (but still within recommended powder amount) load, the bullets didn't group at all. Could barely keep everything on an 8 x 11 sheet of paper. Disgraceful. Also got a couple of failures to feed as I did with AA7.
I've replaced the recoil spring and am using brand new Glock magazines. The gun is very well cleaned before every trip to the range. Everything on the gun is factory stock. I'm not limp wristing and have a serious crush grip when I fire the pistol. This failure to feed thing has left me baffled. For years, I've shot factory ammo and AA9 handloads through the G20, with no issues.
The only thing I can think of is, there must be instances where a semi-auto doesn't like a particular powder. AA9 is slower burning than AA7 and definitely slower than Power Pistol. So maybe that's the problemo. I've got plenty of AA9 now, and think I will just stick with that.
What do you all think? Is it possible that a particular powder, assuming the same bullet and same velocity, just won't reliably cycle a slide? I know people who use all kinds of different burn rate powders for other semi-autos in other calibers without issues. Of course, those loads aren't usually on the outside edge like my 10mm loads tend to be.
By the way, this little exercise has reminded me, yet once again, why I prefer revolvers. I don't go through this whenever I switch powder for ammo for any of my wheelguns. I plan on getting the G20 running, and then going back to my trusted wheels.