When I used to shoot a lot of 3-d, I tried several different things. Shooting a hunting weight bow, which for me at the time was about 57# at my draw length, would wear me out after shooting a couple hundred times and walking a range 2 or three times. Then I switched to a lighter bow in the 45# range and shot lighter arrows with a similar trajectory as my hunting bow. The problem was, when hunting season came around, I had to build back up to that weight to shoot consistently with the heavier bow. So after all that, I agree with Pat. The 3-D was primarily for hunting practice anyway. (I'm not much of a trophy guy), so now I just shoot what I plan to hunt with, which is generally somewhat lighter now than it used to be.