Revolvers fire when the trigger is pulled Have 2 S&W model 64's 4inch. One is a DA round butt,bobbed hammer. Other is dash5 , square butt,wide hammer and trigger. Load plain old 158 gr any type lead! Don't need a magnum,or + P loads..... Shoot your right leg with a plain old .38 round Then shoot the left leg with a + P round...witch hurts more? Potato head.the ones still shooting revolvers ? The ones who did not die when thier autos failed.