Being "nice and shiny" can sometimes be a negative in a hunting rifle as the shine reflecting the sun can give you away. My main hunting rifle is cerekoted stainess to cut down the shine. Based on your requirements, I wouldn't give up a caliber I want to get stainless.It will mostly be a range rifle with the occasional boar hunt but I don’t see it going out in the rain. Stainless is nice and shiny but being in .308 and not 6.5 is my main deciding factor. I’m only shooting 500 yards and I know at that range there’s not really a difference in accuracy.