6pt,

You're not dropping a charging buffalo with an arrow. At least not in time There's a good video on AT of a charging lion with a couple of guys pumping it full of large caliber lead and it still made it to them from like 70 yards off. watching that video will give you a new perspective on stopping a charging animal. if you shoot at a cape buffalo you better hope he's broadside and doesn't know you are there, otherwise you are screwed