The autos tend to rock my wrist with a pain that just about puts me on my knees - not every shot mind you but enough to worry me about Murphy stepping in at the wrong time. The revolvers, though they kick harder, push my entire arm and do not rock my wrist. Grip design??? I don't know and it baffles me as I have shot and carried autos for over 50 years (the .40 is the worst in the recoil department) now I have to re-learn everything revolver especially the reloads and there is simply no comparison to any auto. A 9mm is still doable, but there is just something about a bullet that begins with a mid-range 4