Originally Posted by user
Plasma. Not just hot gas, superheated molecules, as in "plasma cutter".
I checked on this issue with a couple of expert gunsmiths, one of whom has been doing work on revolvers for over fifty years, who confirmed my analysis. And it isn't a matter of cleaning crud out of the chambers; the chambers themselves are vaporized slightly with each round. The metal evaporates. That's why plasma cutters go through steel like butter. And, as I said before, occasional use of a .38 cartridge in a gun chambered for .357 isn't going to cause any problems. But consistent use will damage the cylinder.
If that's the case magnums would damage it even further.
Oh, and I doubt any cartridge can reach the 50000f temps a plasma torch can reach