PJ, I don't know, turn bull would be who to ask directly and he would know. I do know this I have 1894 Winchester receiver that was made in the era of high nickel content. I called 3 big color case company's and they all said the same thing "can't be done" and they wouldn't attempt cause it would not work. Called turnbull and 10 days later I had a drop dead gorgeous receiver that went back together perfect. As far as steel goes look at the differences in colt s.a.a. Over the years . He can even do 98 mausers! He has got the black art of c.c. Down pat. Dusty