I have a film photo of a single bevel Hill that my son shot through a vertebrae of a 254 pound, field dressed weight, buck that was shot at an upward angle. After a long still hunt and stalk, the first shot went through a rib both lungs and out somewhere. The second shot was on the run at extreme range through the liver. The third shot was the buck taking a leap off of a 15 foot high bluff 12 yards from him. The arrow went up just behind the leg on the under side and went through the bone. Dropping the deer where it hit the ground. Total time from the first shot to the deer dropping dead 15 yards from him was probably less than 10 seconds. This was done with a 48 pound Hill style McDonald longbow. My son had a sprained wrist and used a lighter bow that day. I was pretty sick that year, but when he called me for help I went out to help, there was blood spray visible all the way up and then back down that hill. He is always on the look out for a better head, he goes from long and narrow and then to wide, complains about arrow flight in the wind and then goes back to long and narrow.
I can see how one could say that the ferrule would stop bone penetration if left blunt, like on some older models, but it files down real easy. I am not real sure that there is anything on a deer or an elk that the Hill head would not hold up against, but there are always exceptions. I saw a 160 grain Magnus take a terrible bend on a deer hit and got very little penetration. That person was shooting a good heavy arrow out of a 60 pound Super Diablo. I did not think a 160 grain Magnus could fold, but it did.