Mark,, with the 14.5" brl. & Bryan & associates valve I get 22 full power shots @ 600 fps.(14.3 gr. Crossman Domes) I have taken "Tree Rats" out at up to 25 yrds. with it no problem. Of course 11.43 ft. lbs. (muzzle) is considered marginal for this duty. Shot placement is crucial. Alot of folks just dont understand how "Tough" Squirrels really are,, man let me tell you,, I have hit MANY with 20 + ft. lbs. just to watch them scurry off up a tree!! On the other hand,, I have taken many with a stock $50 2240 pistol @ close range!! Tim.