Recently a friend of mine, Viet Nam Combat pilot friend passed away and I inherited about 250 reloaded 9mm ammo. I poured them into a bag with some factory loads and started shooting. All of a sudden the gun sort of jumped in my hand and smoked poured out the side rails. Being ignorant I loaded up another mag of mixed armor and after a couple of rounds the gun really jumped, kinda blew up. The gun jammed and I can't even rack the slide to eject the casing. I'm wondering what type of 9mm gun did he have that would have been able to handle overpressure loads like that? Any theory, suggestions or comments would be greatly appreciated. Incidentally I called Glock and they said if I mail it back to them they'll either fix it or sell me a reconditioned or a new one at $300 or $350 respectively.