Thanks guys...
I'll blame whoever brought this thread back to life... Guess what happened to me on Saturday.
During a family range outing on Thanksgiving weekend, I picked up my dad's P38. My dad and brother had already put a box through it. I loaded it from a box of reloads I had in my bag. First shot was fine, but on the second I felt what I thought was brass hitting my cap and quickly noticed the rear sight was missing.
I pried the case from the chamber and noticed the case had failed. We searched a while and came up with some, but not all of the missing parts. Luckily, none were embedded into my forehead. The entire ejector assembly is still missing.
After packing it up, I went to remove a FTE my wife had on my P89. Sure enough, another case failure from the same box of reloads.
Needless to say, that box of 9mm is history and armed with the info posted earlier in this thread, I'll be hunting down parts to repair dad's gun. Attached are pics of the case, the gun, and the recovered parts.