thanks for the info slowhand. a couple of the guys here are shooting mach2's for tree rats. they said about the same thing as you. head shots are not a problem. the kids said if you can't see the head go for the rib cage. makes a little harder to clean but still doable. a shot anywhere but the head or ribs just about wasted a squrielll.they only lost 2 last year.they are awful nice kids. they had a game cook last fall and invited an old cripple like me! there was plenty of tree rat at that dinner! also deer roast, pheasant, quail,and crappie! it was good eating to.! take care and have fun.