I think a montec made out of a solid piece of steel would actually go through a bone even better then a muzzy, which I would think is more likely to break up. As far as why sharper is better all you have to do is think about shaving. Ever cut yourself shaving? ever notice how hard it is to get it to stop bleeding? it is because the blade it so sharp and makes such a clean cut the blood can't clot well. A jagged cut will clot much better. This is why a sharp broadhead is so deadly, because a deer's lungs are nothing but air and billions of tiny blood vessels, and a nice clean cut through there will never clot in time. They start bleeding so fast that their blood pressure drops through the floor and they pass out, and peacefully die in their sleep as they bleed out.