I've thought about this for a long time but I don't know any calculations to back up my feelings. My personal opinion is pretty sharp, especially at the point of contact. "Scary" sharp broadheads are just that to me, scary. We hunt some remote places where a bad cut or puncture from falling on a quiver could end very badly. Plus, my broadheads are flying at 190+ mph (280+ fps) plenty fast enough to make pretty sharp into very, very sharp. Any mech or aerospace guys out there have data we can apply here?