Elktalker
I used a bone in pork shoulder for my experiments with a Alaska bow hunting supply "samurai" vs a zwickey "Eskimo". Hogs are all butchered at about the same weight so finding matching shoulders wasn't a problem. I used food coloring to mark the bone and put one arrow through flesh only then one through flesh and bone, thus simulating real world hunting. I threw a BBQ for my freinds when testing was complete and whole pork shoulder is cheap! I also used the same method for testing the Arrow dynamics hammer head against the gold tip 5575. I was also lucky enough to have a buffalo rib section that I used as a control.
Every stamped steel blade I have tested was damaged when it hit bone, the samurai had one hit in the ridge of the scapula that very slightly rounded the tip but did not stop the broad head from fully penetrating. Both the arrow dynamics shaft and the samurai provided marked increases in penetration, as much as 60%!
Ya I know similar tests have been famously done to exacting detail but I'm a "show me" kinda guy and if I'm going to be paying more for any piece of equipment I need test results of my own to justify the expense!