I've always felt I could rely on my 45 Glock to shoot a hair more consistently than any of my other semiautos. Over the course of reloading many thousands of rounds, I have made a simple observation regarding chamber tolerance.
With my 45 ammo, I can make ammo with minimal or no flare, using plated and jacketed bullets. Even when there's no visible flare left after seating, I usually still need a bit of taper crimp to ensure rounds will chamber and drop out, freely. I haven't tried cast bullets in 45ACP, but I assume they would likely need a bit of crimp, too.
With my 9mm luger ammo, I don't need to crimp any of my plated or jacketed ammo. And even when I go hog wild on the flaring die for cast bullets, I still don't need a crimp on most rounds. I learned I can seat and crimp cast luger in one step without shaving the bullets, because I can set the crimp so far out, it doesn't even touch 99% of the cases. Maybe 1 in a 100 (mixed brass, not trimmed) gets the tiniest bit of crimp.
My 45 is a Glock.
I have 3 9mm, including Glock OEM, Glock LW barrel, and a DP-51.
Anyone else notice this? Or are my particular guns unusual? If so, does my Glock 45 have a tight chamber, or are all 3 of my 9mm chambers sloppy? Would a looser chamber at the mouth be detrimental to accuracy to the point where it would be noticeable in a service pistol?
I have thought on it, and I don't think it's my die sets. I think the bullet is what determines the final diameter of the mouth, as long as I'm not over-flaring.
With my 45 ammo, I can make ammo with minimal or no flare, using plated and jacketed bullets. Even when there's no visible flare left after seating, I usually still need a bit of taper crimp to ensure rounds will chamber and drop out, freely. I haven't tried cast bullets in 45ACP, but I assume they would likely need a bit of crimp, too.
With my 9mm luger ammo, I don't need to crimp any of my plated or jacketed ammo. And even when I go hog wild on the flaring die for cast bullets, I still don't need a crimp on most rounds. I learned I can seat and crimp cast luger in one step without shaving the bullets, because I can set the crimp so far out, it doesn't even touch 99% of the cases. Maybe 1 in a 100 (mixed brass, not trimmed) gets the tiniest bit of crimp.
My 45 is a Glock.
I have 3 9mm, including Glock OEM, Glock LW barrel, and a DP-51.
Anyone else notice this? Or are my particular guns unusual? If so, does my Glock 45 have a tight chamber, or are all 3 of my 9mm chambers sloppy? Would a looser chamber at the mouth be detrimental to accuracy to the point where it would be noticeable in a service pistol?
I have thought on it, and I don't think it's my die sets. I think the bullet is what determines the final diameter of the mouth, as long as I'm not over-flaring.