Unless you just want to get another rifle or are actually planning on hunting Kodiak for bear you don't need any thing more than the 06. Granted if I was hiking around Kodiak all time I'd probably be caring a short light bolt action like a ruger .338 or .375 ruger, maybe a .350 rem mag, or .358 norma mag but other wise I'd load some good 200, 220 swift a frames in the 30-06.
