i pseronaly dont think any one rifle can be fingered as the best all weather rifle if rust and water resistance are the only thing we are looking at. extreme cold weather and general muck in the action will spoil a hunt before rust will ever set in. that said id go for a proven action like a sako, enfield, springfield 03' or a remmy in stainless with a fiberglass stock. the four of them just seem more robust and imo have less parts to really gum up.