RE: How sharp is sharp enough?
IMO muzzys are borderline...but, they have a nice angle that doesnt dull as fast as a steeper angle that is initially sharper....
the idea is to have a head that is sharp and carries that sharpness. you want the head to slice nice and clean...not rip, tear, and push its way through. if it hits the edge of an artery or blood vessle or vein etc, a dull head can and will "push" it away from the blade without cutting it it at all.
yes, you send one through the vitals with a dull head or even field point, that deer is dead.....but, a sharper head will do more damage and cut more resulting in more blood loss and tissue damage resulting in a faster death and quicker/easier recovery. thats what we all strive for...the quickest kill possible.
not saying EVERY time or anything like that...every deer is different and will react differently to being shot...and shot placement is everything. but, a sharp broadhead that carries its edge the whole way through will be the best killer every time.