My hunting buddy MECHDOC has a mini pro shop in his garage. I stopped by his place to chrono and tinker with my setup for the season. I know what a 403gr setup will do and what f.o.c. I have and what a 428gr setup will do. My bow pulls at 82.2# currently and I have no problem shooting broadheads as accurately as my fieldpoints. Now if he would get a decible meter I'd be totally dialed in