454 Casull loads for defense - Bear

[noidie]

I'm going to Alaska fishing and plan to take my Taurus RB 454. What's the best load? I've got a friend that'll reload for me and I want the maximum. Any ideas?

[runfiverun]

anything,bulletwise that weighs 260 grains or more
provides maximum penetration and is going at least 1000 fps
would pretty much be your minimums.
if you do a 280-300 gr cast boolit at 1000 fps this would be controllable and effective.
if you can shoot more power quickly and effectively then step up.
three hits with a bit less power, beats 6 misses any-day.