I used one on my old Browning I thought it was very cool to shoot 26 inch arrows they looked like bolts. it did give it an extra few feet per second. but I did not like the fact that my first bow kill was at less than 10 yards broadside and I didnot get a pass through ,the fletching stayed in the opposite side. So i ditched the overdraw for a heavier arrow. and the rest have been passthroughs. but that is just my experience with em