The process of color case hardening is actually a very simple one. Results can be obtained with equipment available from Brownells. unfortunately many hobbyists have attempted it and compromised good guns. Every manufacturer has certian signature traits in case colors. To duplicate original colors and patterns, requires a tremendous amount of research and a true understanding of the dynamics of the process. This does not happen overnight, it takes years of research and trial and error.
The ability to determine original colors requires an intense study of high condition original guns.
Brad
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