Well I can tell you right now that the SIMS recoil pad works. But it don't reduce felt recoil by 70% over the old hard pad. The recoil you feel from that hard pad will simply put be softer to your shoulder. There is no getting around the kick for the recoil of the gun from the pressure of the shell is going to be exactly the same. But you can lessen the felt pressure of that hard pad so to speak.