[RealGun]

I think that fouling builds up at the throat opening, so after a cylinder or two, you start having trouble with cocking , rotating the cylinder, or even closing the cylinder. That can come from having the full wadcutter bullet face encountering that fouling. Seating the bullets deeper than any crimp groove solves that problem. Those who shoot a secondary cartridge, .38 in a .357, for example, would never notice.

I started keeping a bore brush and even bore snake handy in order to keep the crimp where I want it and allow the gun to be finicky.