I don't know about the recoil of something that big. I've never had mine on anything but a .22 rimfire. I've had cheap Tasco Red Dots quit working after exposure to .44 magnum recoil. I even had a Tasco Red Dot quit after only a few rounds from an AR-15. Needless to say, this was pretty disappointing.

Does Leupold have a customer service number you could call?