Ok, I’m kinda angry at Gaston Glock right now. Why? I just loaded 400 rounds of .40. And out of that 400 rounds, 250(!!) failed the case gauge! This is from a batch of brass we got pre-polished from a local sheriff’s deputy. He didn’t shoot it, but I assume it mostly came out of Glocks. Glock .40 barrels aren’t fully supported around the mouth, so when a round is fired the case bulges out.
The black barrel is a Glock factory, the grey is an aftermarket. The cases have been colored in red. The big red portion on the left will bulge outwards when it fires. This will jam in the tighter chamber of just about everything but a Glock.
I’m thinking about setting up a Redding G-RX push through die on a $24.00 Lee single stage press (I reload on a Dillon) and feeding rounds that fail the case gauge through that. I’m just not sure if I should be feeding live rounds through it or not.
What does fully supported mean? What if you shot the ammo in only Glocks?
It would work, but not reliably enough for USPSA.
Fully supported means that none of the case sticks out of the chamber.
Is this true of all Glocks or just the 40′s?
It’s true of all Glocks, but especially the .40′s as they’re based off a 9mm platform. This is reverse on most other guns.