I think i would stay in the 150 yards range for most shots. that little pill really starts to loose speed and energy after that. i have my savage sighted dead on at 100 yards and at 300 yards it drops just over 3 feet. that's alot of drop. as for the energy i am not sure but it does not leave much of a mark on the medal targets at 300 yards.i have foundlead at the 300 yard targetthat didnot even mushroom properly. all and all though they are a fun gun to shoot. but they just don't have much peter behind them.