Went to the range yesterday for some time with #1 son and grandson.
Had a deal I couldn't refuse. He wanted a compact 9 and I wanted a G-19. I bought him the KelTec PF-9 (his choice) and traded for his G-19, gen 3. He has department issued Gen4 -19's.
I can tell you I certainly got the better end of the deal, that KelTec PF-9 kicks like a mule!. And it is very uncomfortable to handle when firing (digs into the fingers/hand)
Anyway, I had a gear bag full of mixed 9mm that I was using and had a case failure. The Glock's are a little loose on the sides in that you can see daylight through the slide and grip. Not a defect, inherent in a poly/steel design.
Heat/ smoke/flames/and powder - ouch. Got a 1st degree burn along the top of my index finger and black soot marks across both hands.
Pulled the gun apart, no round in the barrel (that was good) and no damage. My son is a certified Glock armorer, so it was good to have him on hand. Looked at the rest of the rounds in the bag and didn't see anything unusual.
2-3 mags later and - bang - does it again. That's it, all the ammo gets dumped until I can inspect.
Turns out both failed cases are the same brand, marked "F C"
Of the 100 or so rounds I have left of that bunch half are Winchester, a 1/4 PMC and about a dozen of these "F C" rounds. At least I think I can get rid of the bad chit.