find someone shooting 330fps, and one shooting 280. have both shooters shoot at a spot at 40 yards. then have them take 4 steps back and shoot the same spot without moving the site. 40 plus yards is where speed can help, but is doesnt really have a profound effect as one would think. being able to shoot your bow coupled with the ability to judge yardage is much better than the speed. even with speed, you still have to be able to hit the spot....