heres a loop to throw at you, try an airgun scope! Not those crappy little 3/4 inch tube ones either. why? A ruger 10/22 or a high powered air rifle are worse on scopes than a .375 Hrt-n-Hollar! It's because of that foward sliding bolt. try this, I know it's not the safest thing, but place your barrel CAREFULLY< NOT TO PLUG IT! in a gopher or badger hole and fire it, all you will hear is that whacking bolt! Scopes are not designed to handle foward recoil, like that of a 10-22 or an air rifles piston. If you don't belive me, talk to a few 10/22 owners. I'll bet it's close to 50/50 percent of owners who had to change scopes off, regardless of quality. airgun scopes ARE designed to take this abuse.