I've taken two in Manitoba. I used a 47# osage bow. The first was a 250# bear I shot with a flint head at 8yds. as it stalked the guide and myself. The second was a 5 1/2' bear that was acting very aggressively while I was in my stand. I shot it with an obsidian head and had a complete pass through. Although I found both bears there was very little blood. For the second bear there was none, even at the spot where the arrow went through. Consequently I have gone back using my modern trad equipment for bears. It seemed it would be easy to get a good hit with the primitive gear but never be able to recover the bear.