Any of you 7600 shooters, or anyone else for that matter, know anything about or have any experience with the Rem 7600 Weathermaster version? There is one on Gunbroker & the guy is saying it's "stainless", but everything I find on the net says Nickel Finish on Receiver and Barrel. Nickel or Stainless, it appears to be a matt finish (see pics below). How well will a Nickel finish hold up? How would it compare to Stainless for weather resistance? Any information you can provide would be greatly appreciated.