Installed a Trijicon RMR on my 460 S&W XVR 5". First impression it took longer to get on target, but this one works even in low or no light. Negatives, should of used some Permatex on the Weig SS rail mount. It took me allot rounds to get it sighted in, and then have the rail come loose. Started wearing glasses about 10 years ago and this Trijicon definitely helps in getting this 460 on target. As for the Trijicon holding up to recoil, only problem I have had was with the rail mount.