Cryogaijin, I'll take your word for it, and hope never to experience anything near that myself for more than about a day. I would like to hear your other observations on extreme cold and shooting as it relates to gun care, prep, etc.
Both Blazer types have worked well for me.
I only got back into firearms my last year up in fairbanks. Anchorage doesn't get near as cold, so I can't really give all that much data. Others here have much more extreme cold weather experience than I do.
My Observations: My remmy 700 bolt action (in aught six) is just so problem free I feel everyone should own one. (Note: Aught Six R700 seems to be the most common hunting rifle up here, followed by same in .308)
My first handgun, a Highpoint c9, worked flawlessly on all brass cased round nose ammo. The colder it got the less reliable it got with flat nose/truncated cone/JHP and aluminum/steel cased rounds. Failure to feed, failure to eject, stovepipes, the whole gamut of feed/ejecting issues.
My first NICE handgun, my xd45c has never had ANY problem at ANY temperature with ANY brass cased ammo. Runs steel and aluminum cased ammo fine down to about -20c, then the ammo binds to the magazines, and you have to hit 'em to unbind 'em after each round. Never had the issue with brass. OTOH I was able to eliminate this feeding issue by coating the inside of the magazines with generic, plain simple ski-wax. (never tried any of the fancy firearms lubes. I had Ski wax on hand, and I knew it worked in those temps, so. . .)
I do have to stress a couple things about firing in very cold conditions: 1, good shooting gloves are a MUST. I used the "Fox River Four Layer Glomitt" and honestly couldn't shoot without them in the winter up there. 2, Polymer grip handguns are vastly superior to metal in arctic conditions. I was deeply worried that they would crack/shatter/deform due to differential contraction, but turns out they tested and worked that into the design. Glocks and XDs are quite arctic capable. Your holster probably is not, however. That is a bit more of a problem. 3, mag loaders are almost a requirement, if you want to avoid frostbite. If it is cold enough to get instant frostbite when you touch metal, use a magloader.