I hike, backpack, mountain bike, XC ski and snowshoe in the wet part of the Pacific NW. My biggest danger would be two-legged predators followed by coyotes, cougar, bobcat and black bear. I have seen all of these in the woods with the exception of black bear. Accordingly, corrosion-resistant .357 revolvers have always been my outdoors carry. For many years, it was a 2.25" Ruger SP-101 with .357 158 grain JSP. I carry 24 extra rounds (two 12 round ammo wallets) with me.
Just about two years ago, for the weight savings, I switched to a Taurus .357 Protector Poly in stainless. It has worked so well for me as a trail gun, that I picked up another as the truck gun. At this point, I have a few hundred .38 rounds through each and about 100 .357 rounds through each. The only issue I had is that on both revolvers, the cylinder latch was awfully hard to release until I had a couple of hundred rounds though it. The Poly, like all my other Taurus revolvers to date, works well for me.