Ron, I have some ordered. When it arrives I will test on a "shooter" and see if it removes the rust bluing along with the unwanted rust! Results will be posted to this thread.
Rick, Strawing is a heat process as is "nitre bluing", so a "rust remover" should not affect it. I have had great success in removing light rust from white, strawed, and rust blued parts with WD40 and 0000 steel wool.