i havent tried one and never will. i like to shoot at long range. the problem with the mark II is that they didnt install a paralaxel adjustment. most scopes are set to be in adjustment at 150 yards. so when you go out to 400 and beyond the lenses will be out of focus. i would spend the money on the most important part if your long range rig the scope. if you dont get a good one it wont matter how good the gun is you wont be ale to consistantly shoot good groups at long ragne.