Home Forums Hunting & Shooting Alaska 300 win mag grizzly and moose?

I'm am primarly a bow hunter so am throwing out this question

Have a moose tag in BC this Oct and the guide has a grizzly tag available. I said hell yeh I'll take it, also picking up at least one wolf tag too

Taking up my bow but also bringing my 300 win mag. I know the 300 is more than enough for moose as I have shot 2 with my bow

Is it justifiable to pick-up a 338 or 375 HH for the grizzly bear or is a 300 win mag sufficient? I know the grizzly and moose run smaller up in N BC than Alaska. Thought I would post this here as you guys seem to have the most real world experience.

Any loads, bullet selection 300 mag/ 338 for big bear?

Thanks