Mark: I am going to ask METL to tensile test a segment of the "Cast Steel". If it turns out to be Decarbonized steel, it should be noted that Meriden and Crescent "Armory Steel" and "Parker Steel" were each shown to be Rephosphorized Decarbonized steel by composition analysis; "Remington Steel" on the Hammerless Model of 1900 was reported by Remington to be Decarbonized steel also.

Several testing labs in the U.S. do formal proof testing - but the cost starts at about $500 per test.

A mechanical engineer friend in Vegas, who has been active on the PGCA Forum, was investigating using a hydraulic pressure failure test, and has some of the pattern welded tubes I used for the tensile testing published back in 2014. Marriage, and a job wink have gotten in the way, but we'll see.