ORIGINAL: Sylvan
But............ the fact remains that there are bows that will shoot a lighter arrow with more KE than a heavier arrow under the exact some shooting conditions; i.e. same bow, same draw weight, same draw length...only the arrow changed.
O.K. You guys have fun!!!
Scoff if you like, but you only make yourself look like more of a pompous, obtuse, know-it-all than you already have previously, by discounting something so easily proveable, and observed by an engineer who has forgotten more about archery than you'll ever know.