Crossman Titan GP .177 , 1200 '/s , 10 yds right below his ear. I was very disappointed in this rifle. Crow Magnum pellet. I have a hard time understanding what anybody see's in these. I have shot many squirrels , none too die immediately. I'm sure their are many that have sucumb to their wounds, and died. I am an immediate gradification type person. I'm thinking in terms of .17HMR.