I tried a Millett red dot (supposed to be a pretty good scope) on a Ruger Super Redhawk chambered in a 454 casull. It took exactly three rounds to destroy the internals on the sight, laser inside came completely loose. I called Millett and they told me that it should hold up to the recoil, send it back and we will send you another one.The second oneheld up forfive rounds. They sent me another one and suggested not using it on a handgun with that kind of recoil.