Early .17 Remington barrels on the BDL 700's were stainless. They were copper plated, then blued.
Probably doesn't add anything to the OP's question...just a little factoid.
Good shootin' -Al
Interesting. I've had a bunch of trim pieces re-chromed on British cars over the years and always sought out platers who did it correctly by what we called "triple plating". That entailed plating a layer of copper first, then a layer of nickel, and finally the chrome. Made for a very durable job, with kind of a "depth" to the finish that's hard to describe. It was all about providing the best substrate for the subsequent layer.