I'm prepping a Rem. 521T for blueing. The bolt handle & rear bolt shroud are case hardened. I seem to recall that when the case colors are removed by polishing the conventional re-blue process produces an even purple color over the part. If that is what happens, I may just have to live with it.
Back in the '70s I made a muzzle loader from a kit. To add a little personal touch I heat blued all of the screw heads. I found that I could produce different colors with varying temperatures & the colors looked like case colors.
My question: would the larger bolt parts (bolt handle & rear shroud) if heat blued survive the opening & closing of the bolt any better or worse than conventional blue?
Any input will be appreciated.
Henry