I've never used it on bear, but after what I've seen it do to big Missouri whitetails, I don't think there's a black bear that walks the face of this earth that couldn't be laid low with a .35 Rem. I've got a Marlin that likes the 200 grain Remington core-lokt load and LOVES the Hornady LeverEvolution stuff. I can find the Hornady cheaper so that's what I buy.... I don't think the deer care much either way.