What Graybeard said was correct. I have owned two handguns with a recoil reduction system, and they both worked fine. The first was a T/C Condender in a 7X30 Waters. The factory muzzle brake reduced the felt recoil quite a bit. The second handgun was a F/A .475 Linebaugh Model 83 with a 7 1/2 bbl. It was purchased with a Factory Magnaport with four openings in the top of the bbl. The felt recoil on the .475 was about the same or a little more than a 240 gr .44 mag. In my opinion. After my shoulder injury, the recoil was still too much and I purchased a F/A Model 83 in a .44 mag. I hope this helps. Rod in Pa.