I had a 3-12 mounted on a converted Ruger 77/22 magnum with a GM fluted barrel. Once sighted in, it worked pretty good. Range the target, set the dial and 5 for 6 at 220 yards. Had to 2nd shot one as I hit low (my fault). Warm day with no wind. Worked pretty sweet until something long & fuzzy showed through the scope. Don't know if it bothered anything, and BSA offered to repair, if I get it sent back. I found the elevation easy to get out of zero, if you didn't keep an eye on it. Had it turn one complete revolution up and suddenly everything was hitting low. Got it back on paper and turned the knob and all was well, Then the fuzzy showed up & I took it off. They remind me of the old Tasco scopes; either crappy or Ok for the money. There are optically superior scopes out there, but you gotta dig a little deeper into your pocket. I find as time goes on, I don't want to waste it mounting replacement scopes all the time. Mount it , zero and then I expect it to work.