After five years and thousands of rounds fired through my 1860 Pietta Sherif model revolvers, the cylinder slots have worn out to the point where the cylinder stop doesn't always stop the cylinder in the right place and the firing pin hits the rim of the cartridge rather than the primer. The slot is actually "peened" where the cylinder stop engages.
I ordered a new pair of cylinders and all is well again.
I was told by Kirst, that because these cylinders are designed to be drop in, and the diameter needs to be slightly bigger than the original C&B cylinder, the "stop" area of the cylinder slot needs to be relieved. Some Piettas don't drop the cylinder stop enough to release the cylinder to turn on the next cocking. This leaves VERY little material for the cylinder stop to bang against and after lots of SASS slip firing, they are peened to unusable.
OLD
NEW
On the old cylinders I'm going to TIG weld this area up and recut and adjust the cylinder stop for perfect engagement. Who knows, it just might work!
Comments?