Arther P ,I have actually taken chunks of meat that were discarded from a slaughter house. Bones and all and tested various broadheads on them. I was astonished at how a cut on impact out cut all of them. In the bone it acted as a maul and split through the bone. Thats what turned me on to cut on impact. I may be shooting a compound , however the old broadhead technology will never be improved upon IMO. They can keep the steel drum test. It might help if you were hunting terminators from the furture. But doesn't show me anything about shooting an animal. Just for kicks last year we took a normal 3 blade and a zwicky and tried to push them with our hands through several layers of carpet . The cut on impact went through like butter. The normal 3 blade needed almost all of our body weight to get started. I guess we know what to use if ever attacked by a carpet monster.