Please don't misunderstand. As stated in my post I now carry a .45-70, typically loaded with 405 gr. bullets at 2050 FPS. Also, I would not take a .30-30 specifically for a big bear hunt. To be honest, I currently have a .475 Turnbull on order, specifically for work on dangerous game. I do prefer big, heavy bullets putting big holes in big, heavy critters to anchor 'em where I hit 'em.

I only expressed that a .30-30 with a heavy load could serve as "grizzly insurance," i.e. if one were on a mulie or elk hunt carrying a .30 WCF one needn't feel undergunned to defend one's self if a bruin with a nasty disposition would show up. In such a situation a lever action or double can also add certain advantage, i.e. multiple shots if necessary without the gun ever leaving the shoulder.

All the best.