I use a scout mountain pendulum sight and my bow shoots 250-253 fps. I also agree that out to a certain yardage there is no difference if your form is correct. Howver I also do not agree that a bow shooting 250-260 is getting it done like a pendulum at say 30-35 yards. A bow shooting 300 fps is not dead nuts at 15 yards and dead nuts at 32 yards...it just doesnt happen not with one pin anyway!