Not on a pistol, but my dad bought an Encore rifle in 500 S&W with an 18" barrel and it recoils enough even as a rifle that it has tried to rip the scope rings out of the mount on two different mounts. Chewed up the cross slots in the mount after a handful of shots. He finally sent it to in to get the TSOB mount and 3 rings. So far it's holding up well, I can only imagine the added stress the mounts see on a hard recoiling scoped handgun.


Eric