The guy's here in Ontario use Thinderhead's for bear but lately I've heard from some of them that Montec's are next to put on that list. I don't know of a lot of hunters here in Ont that use Mechanical's most use fixed heads,why? I'm not sure since i've never hunted bear yet with my bow. But what I can say is that I use Steelforce for hunting moose and they are an absolutely a great broadhead for hunting any large game.

nubo