Bill, I think that's the ONLY rule...ya make your own as you go! <img src=icon_smile_wink.gif border=0 align=middle>

Dan, I've been curious a long time about that very question: All else being equal (bow draw weight, draw length, quality of arrow flite, etc), is there a point of diminishing returns (of energy transfer) for arrow weight? I've never gotten a consumate answer, & am not nearly well versed enough in physical laws to figure it out by myself. Veeeery interestink!!