I have a Gamo 220 Hunter 1000 fps with extremely light pellets but a real 850 fpswith standard weight. My best shot for distance is a pidgeon I hit at 51 yds. in the center of the chest. He took flight but folded in 10 feet. We shoot squirrels all the time with it and it will kill them with a head shot at 25-30 yds. Springer air guns are really hard on scopes and mounts but once you get them to where they won't move they can be pretty accurate. I settle for inch groups at 20 yds.. it could be better but the scope is junk.