I was thinking this may be interesting to see what the states list as lawful to hunt big game with.
From Washington State DF&WL
Broad head must be unbarbed, at least 7/8” wide with two cutting edges, & completely closed at the back end, (they do not mention arrowhead materials, so stone and bone are in)
It is unlawful to hunt big game with a retractable broadhead.
Arrow must be at least 20” long and have a 6 grain per pound of draw weight. (40lbs draw at 28” min) with a minimum of 300 gr arrow wt. (you do the math Washington didn't)
Happy Hunting!