As I said I have never done this before, I do not know what would be considered to be too high a temperature for the hammer ? I do not believe that there will be any load bearing . The shim will not be sitting directly in the full cock notch but will be placed below the notch not quite and 1/8 of an inch so it will not come in contact with the end of the trigger sear but come in contact with the trigger sear Body a little lower as well.
Does anyone know what is the max heat that a case hardened hammer can take before it becomes annealed ? I am not sure it is even hardened at all,guess I will take a file to it in a smalll obscure place to see if has any tendencies to dig in any at all of just skate across the surface .
I am going to wait to find a definitive answer before starting as I do not want to do this on a trial and error basis !
