I had a .22 Nitro Venom...took a couple squirrels with it before I returned it. Now I just take a squirrel whenever I can with the .177 pumper.
I have a 5-50 yard shooting range in my back yard. I just shoot from the back patio. Its a lot of fun. In the summer I'll go through 250-500 pellets in a couple days sometimes lol.