Go with either. Having spent my entire adult life either hunting in Alaska by dog team or snow machine, or field training exercises in the dead of winter at fort greely, and training at the black rapids northern warfare training center: better time could be spent discussing the methods of handling firearms in the cold:
I test lubricants in 30-50 below. When most are hiding near their TV, or reading worthless gun magazines beside toyo stoves, I'm seeing what works in this miserable weather.
Clean all residual oil out of every part. Don't bring firearms inside, where condesation will gather in the warmth. Use faster burning powders and forgo some velocity for lower pressures. Steel is brittle in the extreme cold. Lower pressures are good.
I don't care for graphite lube. It is bad for your lungs and is marginal.
The best I've used so far: Amsoil 0 weight oil. It will pour out of a jug at 50 below. Learn from my pain: coat your gun parts with that...
.
