I have an older English double gun (A&D style box lock non ejector circa 1920s-30s) that I am considering having the barrels cerakoted. I do not have the budget for this gun to be reblued, but there is a cerakote color called midnight blue that does a passable job, and would certainly improve my gun’s looks.

My worry is that this color requires curing at 300F for an hour. I am concerned about my ribs and their solder. Not sure what temperature the soldering would start to fail at. Also unsure what type of solder would have been used. I would love some advice.