The barrel needs to be clean, you need remove the primer residue every ~12 shots. Just pass a brush and a patch down the bore. I got best results with magnum primers.
Steve Hurst
Concur with Steve and others. I too have shot thousands of them out of Colt Troopers, Pythons and S&W K frames. Very useful for training new LEOs in proper DA revolver marksmanship.
LMG
Concealment is not cover.........