Not positive, but I believe that this is the process that Mr. Cooper is referring to in the link below:

http://savageshooters.com/SavageForu...html#msg223188


Have worked with salt bath nitrided(Quench, Polish, Quench) parts in the oilfield industry. This process gives metal parts a .005" to .020" deep case that approaches the hardness of tool steel. It also reduces the porosity of metals, which in turn reduces friction and gives a lubricity to the metal.

Don't have any experience using this process on rifle barrels, but have discussed it with several that do. One precaution that seemed to be mentioned was a thorough cleaning of the barrel. The people that do this process don't want any contaminants(powder or copper fouling) in their tanks.


Dana