Johnw you are on the right track thinking R7 or R9 if you need a little more power.

MM you seem to be getting the hang of it! That bench groups is about what I expect from my R series Beemans. FWIW: more than one rock chuck has gone to the great rock pile in the sky at 60+ yards. Even though the muzzle velocity of my R9 is only 665fps it still more often than not will send a 14.3 Premier hollow point right through their head. Doesn't take much wind to screw up those longer shots though. I feel like anything under 40 yards is in big trouble.

A true sportsman counts his achievements in proportion to the effort involved and fairness of the sport. - S. Pope