This is a quote from another thread:
tjconrads wrote: I am shooting a Black Widow longbow right now: 64″, 56# @ 28″ draw. I also shoot one that is the same except two pounds heavier. I used to shoot a Robertson longbow that was 69# and shot the same arrow at 197 fps, but the hinge blew out in Africa and I found that the BW shot much smoother and much faster at much less poundage. Design improvements in many bows today allows us to drop a lot of weight off our draw.