my glock jammed

Without pictures or a more detailed description of the failure, a number of things could have caused it....

Bad recoil spring, bad mag spring, thumb riding the side of the slide and slowing the recoil impulse, limp-wristing, bad follower, out of spec ammo, or evil gremlins.

bad crimp [ie no crimp or not enough to remove belling on case mouth] will do this as the case is too wide for spec - have a g30 that did this with reloads that fit everything else 45 i shoot

IMHO it is bad ammo. My Department has had 2 Remington .40 cal cases that were slightly longer and would not allow the slide&barrel to lock.

Yes, bad ammo.
In fact a few months ago, I was loading some UMC 9mm (250 round box, right? ) and saw a mashed case. The bullet had been seated onto not into the brass. Somehow got past QC, and almost into a Glock magazine. Showed my friend, then chucked it. All the rest was ok. Still, those UMC & WWB is decent ammo for play

Originally posted by Sikhed
Yes, bad ammo.
In fact a few months ago, I was loading some UMC 9mm (250 round box, right? ) and saw a mashed case. The bullet had been seated onto not into the brass. Somehow got past QC, and almost into a Glock magazine. Showed my friend, then chucked it. All the rest was ok. Still, those UMC & WWB is decent ammo for play

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A few weeks ago I had a UMC .380 round where the nose of the bullet was even with the top of the case. Amazingly the case was not spilt down the side. I am glad I inspect each round out of the box before I load it into the mags.

Talk about bullet setback:supergrin: I dont know how it could have been setback that far if there was a full powder charge in the case so it might or might now have KB'd, still I was not happy.

That round along with the lot# got sent back to Remington. Rem was very concerned and sent me a voucher for free ammo. Since they were helpful and concrened Rem UMC is still my preffered practice ammo for all calibers.

I agree that bad (out of spec) target ammo is the culprit in many jams.

Is this differant than N.Y. had with there 19s