Just today I finally had my first real issue with steel case 9mm. Round number 26,125 (give or take) in my G34 fired... then the gun went 'click' and was locked up solid. I'm used to rounds not going off on the first strike (those primers are hard) but never has it locked up on me. Couldn't get the slide open and there was a live round in the chamber. After some rednecking around we got it open and found this: It didn't go into the magazine like that (I always inspect primers as I load the mags out of habit, sorta the last QC check on my handloads) so the primer must have backed out a bit under recoil. When it fed into the chamber it must have acted over length and smashed the case mouth into the lands? Something made it not let me open the slide. The scary part is this: It was fully in battery and dropped the striker and hit the primer, so had it gone off... I suspect things would have come apart rapidly. Very odd that it's the stuff with the sealed primers. So much for "mil spec". Although I suspect the Russian spec isn't all that tight. Good thing I've saved enough vs. brass to have paid for the gun! Put another 100 or so through it after this finishing up practice and the gun was no worse for the wear. At home I added up the 9mm steel case I've used across all the guns, looks like I'm just over 33k total. Damn, you would think I would be a better shot by now.