Some of you are right.......I haven' t seen any major difference between the 65% and 80% . I don' t think the 80% gives any huge advantage. But that goes both ways......if the 65% is really not much harder for you to hold back ,then why don' t you use one? I would if this issue was that important to me.

I do have to agree with Jason N though.......I personally feel like some percentage of draw weight vs. holding weight would be a better measurement .