25 years ago I bought a used HiPower at a LGS, someone had dinked with it, filed, dremeled, etc. but of course there is no felt reset in dry cycling those guns, so I did not detect any problem when handling or dry firing it.
First trip to the range, first shot was a complete magazine dump, fortunately there is a mountain behind and above the top of the berm at that range.
I replaced every piece of the action with new Cylinder & Slide parts, and it was fine after that, but it scared the piss out of me. Cyclic rate was at least G18 or faster...