Last year shot 32 squirrels in my backyard, the little critters were starting to move into my attic, had to resort to cutting populations, Used a model 66 crossman, very affordable .177 scoped, Walmart. I head shoot them withing 20 yards, ten pumps and you are ready to go, I chroned the speed got 800fps plenty for a squirrel,also bought some nice hunting pellets with the points, work very well, didn't have one get away;) good practice for the centerfires;) Aim small hit small. RAMbo.