I have an FN Mauser blued action that I had rebarreled to 264Win a couple years ago and opted for a Stainless barrel, then had the barreled action sent off somewhere by the smith and had black teflon coating put on. The teflon will chip if it is bumped against something hard enough. I am having a mild case of CRS and don't recall what its called but the treating/coating the S&W Performance Center puts on some of their PC1911's is guaranteed not to chip or scratch, etc.