All I can say is if you shoot aloth, clean aloth.
If you shoot deer from a clean bore, make sure the bullet lands where you want with a clean bore. Can be a bit off from a fouled barrel. And hard to keep a gun in this form during the season, reason , you shoot a coyote, you now have a fouled barrel, the next shot may be off a little or a bunch.
Here is what I do, shoot year round, aloth , bench to get sighted, and check accuracy, then its off hand , sitting , prone....
Come hunting season, I fine tune, ie get that bullet exactly where you want it with lightly fouled bore, now I mean , and in this case only, I will fire a few shots , clean with solvent and patch only, just to get the crud out, then a light coat of oil, very very light. That way the bore is protected from moisture and ready to go. It should shoot where you have tested and stay there for follow up shots. In the shoot a coyote and thats it, well clean with patch/solvent/oil at night, and your back in buisness.
So to sum up, hunt with a fouled bore, but keep it protected.
I find a gun in cold temps will sweat/cool sweat many times during the season.
If from a camp the gun stays at the same temp as outdoors as much as possable. Take it inside, it will sweat real bad, one good way to check for a leak in your scope
Frank