Compare to chrome lined or nitrided (melonited) as far as durability and corrosion resistance? Does a barrel of 416R hold up to wear and corrosion better than a non-lined, 4150V for instance? I realize that the entire barrel is made of stainless but I'm speaking specifically about chamber and bore related issues of wear and corrosion.

I've always heard that stainless is "softer" than other barrel materials, and I know for a fact (having seen it myself on a pistol slide) that stainless can rust.