As a general rule a bow will perform at it's highest efficieancy at peak weight.
Not always a rule though. After sifting through dozens of Norb Mullaney's bow reports there are indeed some that actually perform to a higher efficiency at the middle of the draw weight specs.
You can never tell unless you do the full blown testing though or check out Norb's bow reports in....which magazine am I thinking of here guys??
For instance, I beleive it was an 03 Hoyt Cybertec that performes slightly more efficiently at 65# on a 70# max draw. Seems like I saw the Martin Cougar 3 SE was in the same boat.
Either way, I don't think you'd see a huge difference provided you choose the correct arrow inn regards to soine and weight for the particular draw weight. Wouldn't be a deal breaker for me anyway.
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