That would require a lot of infrastructure. I think rust bluing this narrow strip would be a respectful way to go on this 102 year old revolver.
It will certainly protect it and while it may not be a perfect match to the carbonia bluing, I think it'll look better than cold blue. Certainly helps that a bottle of rust bluing solution will only run me about $16.
Thanks for the input, by the way. I knew Colt was big into carbonia bluing but I didn't know S&W did the same.
When did Colt make the change in their process? I assume they both went to a hot bath blue?