I have a Spanish Mauser (1893 model) that I am going to have re-barreled. As such I decided to have the lugs and action re-heat treated (case hardened). I have found an outfit that will do it, but it has been a while since they did one, and their procedure for doing it was written for using a salt bath, which they say they no longer have due to the amount of newer EPA regulation and associated costs. They can still do the job, but they need me to provide the specific desired surface hardness for the lugs and the action. Would anyone be able to help out with some recommendations on Rockwell numbers?
