I have stuck to my whitetail set-up as did everyone that was on my canada black bear hunt.. 2/4 used mechanicals.. Rage and I believe Spitfire.. They do the job, honestly if you hit the bear where you should, you will have no problems with your penatration and kill opportunity.. As many have mentioned bears are not hard to kill, stick then in the lungs and or heart and most likely you will see your bear die within 30-50 yards.. I honestly think they die a ton quicker then your average whitetail... Be more concerned with proper judgement of the bear because that is the tricky part. Good luck