I think we have once again, moved into the what's fastest, what's extreme, nitpicking nonsense that consumes the other modern equipment. Every time someone "experiments" with something folks try to turn it into a "Law." Ashby did some great work - its no "Law of Traditional archery". If you are shooting a 300+ grain head out of a 40-45 lbs bow, I hope you are doing it from a tree and shooting straight down. Maybe the "Law of Gravity" will help you then. At least the arrow will be pointed in the right direction.