Pat, the lighter arrow you shoot the faster it will come out of the bow. It will not neccessarily maintain the speed as long as a heavier arrow that started out going slower. ZI tried somethign different on my wood arrows this year and it flopped on me, I figured I would make very long needle tips and effectively have shorter stiffer arrows even though the measured at say 26". They were falling out of the air at around 250 yards. The 300 grain arrows would go 300 yards or better. This year I am spending all my time on arrows, I have enough bows to last me a lifetime, maybe do a little modification here and there.