The poster on Shotgunworld indicated the gun was " a 25 year old over-under Perazzi that has shot hundreds of thousands of rounds", which begs the question, at what point do you retire a gun? Also his load data is not what I would call a mild one, but he did say he used a PW press which reminds me of that long thread here a couple years ago when the poster blew up a pristine Baker. He used a PW press, and Clays powder, but what happened to that P-gun was unreal, not just a blown out chamber but total destruction. It had to have been the perfect storm: overload, stuck wad, weakened chamber. WOW.