You know, there is a lot of broadhead talk going on right now. Here is an interesting photo to show the penetration of a 3 Blade:
This arrow penetrated not only my buck, but this very heavy plastic water tank. It was at leat 1/2" thick and you can see water trickling down. Don't let anybody tell you a traditional bow does not have enough power!
I pulled this arrow and we patched the tank. I then gave the head a few hits on my steel and killed the doe antelope above the next day with the same head and shaft.
55# bow, full lenght Easton 340 Full Metal Jacket Shafts, and Snuffer SS broadheads.