I've read a few reports on the Montana Rifle and they have all been positive. A local Gunsmith, P.L. Holehan, uses their actions in his builds. That says all I need to know and I'd have no issues buying or using one as Pat is an excellent gun bender.
I've benched a "custom" in 338 RUM built for a friend, it felt good and the parts that would be expected to be Montana Rifle Company's responsibility seemed like they were right - any rifle action that correctly emulates a model 70 can't be "bad" IMO
My Uncle emigrated to the BC coast the same year I began in the Fire Service, '73, he retired there and I hope to visit in a month or two - I've spent countless days and weeks up there with him fishing and ... AND on hunting trips with others - If it were not for "grand children" and the immigration hassles I would GLADLY spend my remaining years on the British Columbia coast area and/or the "bush" - It's a GREAT place with GREAT people OOPS !! SORRY !! didn't mean to highjack !!
I have never been to Alaska, that being said I do own a 116 WW and it's a great gun. Accustock and trigger are awesome. I like all the choices and have spent time with each I just always come to the defense of the Savage.
I don't live in Alaska either, but hunt in western Washington... Which is also very wet. Technically, several of the areas that I hunt are categorized as "temperate" rainforest lol. I have a savage 116 as well and I love it. I bought the non accustock version and put a b&c medalist classic on it and it is a very fine, very accurate all weather gun for under a grand. Very happy with it this far, and for extreme climate, I didn't want to be a couple thousand into a rifle.
KINGSNAKE, Of the guns you listed I have kimber 8400 .375hh and a Winchester 70 .300dakota if I could only pick one platform I'd take the Winchester solely based on the lack of after market parts(stocks, triggers, etc.) for the kimber. Now with that being said my kimber was the first hunting rifle I bought with my own money(I was 16) so I'm bias to it, but if you break the stock you can't call midway, brownells, etc. but you can with the Winchester for that reason alone I'd go with the Winchester.
I need to get to a gun shop and get my hands on a Winchester. My local shops don't carry much so I have to travel a couple hours to see a decent rifle most of the time.
Handled the 2015 model Winchester EW at SHOT this year with the B&C stock on it and it feel even better than the older EWs and they were already pretty nice rifle. I could certainly see me hunting with one for sure!
I decided to cerakote my 330 06 and designate it my Alaskan rifle. I'm still gonna get the 300 wsm. But it may be after season since I have some gear upgrades coming this year. That will give me a chance to handle some of the guns listed.
As far as weather resistance(and alder and rock falls) Ive been really impressed with the nitride coating on the barrel and action, and the hydrographics on the stock. Ive beaten the heck out of it and so far not even a mark.
Honestly I have had several different finishes on my waterfowl guns. I mostly hunt on water and they are always wet. The camo dipped shotguns are the most maintenance free. I also have an older A-5 that I bought cheap and I just hit it with some Krylon and it has worked out really well. My rifle I am picking up I am also going to just rattle can the thing to the camo I want.