It really helps to read the OP.
- OP did not fire the brass. They were fired in someone else pistols.
- OP did not mention Glock pistol only that the brass "looks to have glock bulge"
- OP is not going to use the brass for Glock pistol but for a carbine.
GW Staar, I do agree with you on using thinned/weakened brass on less supported barrels that could lead to thinned/weakened part of case base ending up in the same spot to add to case wall failure/rupture.
Yeah, for me three times is the ticket.
I did correct the pistol for rifle at least....and added another clarifier or two.
If, as he mentioned, the "bucket" came from a police range, it is in all likelihood Glock shot. Most PD sidearms are Glocks these days for good reason, and they don't care about "bulges," (they use cases ONCE) they care about total reliable function, which Glocks with their ample chambers excel at.
So again, clarifying, if cases shot
from her weapon (rifle or whatever) creates similar bulges,
I know her carbine even bulges it a little like the above pics . Maybe just a tad less than the stuff in the buckets
then it also has a case support weakness.....slightly less I believe he said.....and that's good....smaller bulges are good.
The point I make is you can't reopen old wounds in a case no matter how well it "looks healed".(bulge-busted) Unless the case is supported in the chamber so that it can't over-stretch there again....I'd do as the police do....use once.
That's why I suggested to the O.P. to compare carefully ammo shot in "her" weapon with the bucket from the police range.
I'd be interested in knowing which carbine and what the magazine to chamber is like........IOW's, if she
was to have a case that ruptures......what direction is the damage going to go. Away from the shooter hopefully.
Nearly all the .40S&W kabooms I've read about were bulged cases reloaded. Luck of the draw when a weakened case happened to face the weak side to the bottom of the chamber against the feed ramp....again.