BTSDOG
NES Member
Was just finishing up decapping my first 1k of 9mm when I ran across this gem. I already popped out the primer so i couldnt really check for overpressure issues. My guess is it went off in a .40 chamber instead of a 9mm. If thats even possible. I put the calipers on some fired cases and they ran from the 370's-380's range. This one measured out at .4320. Here are a couple of pics. Thoughts anyone ??