As already stated under close range, using GOOD pellets. A scope I would suggest would be a Simmon 3-9x32AO 22mag. Its a nice sized scope, includes rings, adjustable objective down to 7 yards. I would use RWS Superdomes, they're a little heavier than Crosman Premier, a little more money but worth it. You can order them on WalMart.com and have them in 2 days.. When I say they're worth the money I mean it. At 20 yards you could expect 1 ragged hole if you do your job. Plug the heavier pellet carries more energy. In stock form I wouldn't use 10.5 grain pellets because they will be flying around 500fps.Can someone please tell me if this air rifle is adequate for squirrels and can it be scoped?