I think the worst edge with any narrower broad head can have is when one tries to get a smooth hair shaving edge and fails to get it. Arteries are not tied all that tight and they are made of fibrous tissue like muscle tissue. Ever try to eat a piece of roast that has a heavy vein or a small artery in it? They are unchewable. I do not argue against hair shaving buffed edges, but filed edges, if they are keen and not simply rough still work. Louis Armbruster finished his heads off by pulling the narrow flat of his file reversed, to pull up a working bur. I have examined his head after it ripped through a deer and it was still extremely sharp. A friend of mine that is very short on talent, when it comes to getting a razor edge on anything, went to the the reversed pull with a 1/4" round file on original Grizzlies, I sharpened the first one for him with that technique and he could get that edge. He also killed a deer with one that year, he got a super blood trail from a slightly high double lung hit. The blood trail didn't matter, the deer went down close and in plain sight. i also have a couple friends that battled with Hills, they couldn't get them shaving sharp nor the with the method Craig described, nor with the Tom Musato method that showed them. I showed the add buggers the round file method and they can do that with Hills. Hill heads work very well with that method, even for them. I am not saying that Grizzlies are not super heads with that hair shaving buffed edge. You know when it is right, the hair falls off your arm or leg with almost no drag, and soon enough your limbs are bald from testing edge sharpness. Just getting a couple of hairs to show up, when going for the smooth edge, does not count. Chances are that there is just a microscopic burr that is taking the few hairs, it will give out going through deer hair or bone. If one is challenged at sharpening to that super hair shaving edge, there are alternatives that do the job quite well.