Advantage of a long draw?

[Matt D.]

Does anyone know a rule of thumb for what you gain in performance for an additional inch of draw length? Say you have two bows, the same efficiency, one 50# @ 28", the other 50# @ 30". Shooting the same arrow, how much of an advantage does the 30" draw have?

[katman]

Matt, I remembered reading posts by OL on the 4 strand string thread here on tradgang. I pulled these lines from from it, hope he won't mind. So it looks like 2 inches would be about 6% more horespower.

"Adam up there is getting 4-6% more so it's like he's drawing a full 1.5-2" more"

"3% or the equivalent of 1" of draw length"

[HATCHCHASER]

5 fps per inch give or take.