Agent, since you know you want a bigger rifle for brown bear (wise decisions), it's hard to beat the good old .30-06 for deer & elk. I'm not sure what part of the world you are hunting in but the 7x64 is also a great round for deer & can stretch to elk. Any of the .30mags are also fine, I've just never been a fan. The .375h&h is also a great round but rifles can be a bit heavy for a long hike up steep mountains for elk.