Raimey, yes, the Tobin company offered Krupp barrels in both Norwich and Woodstock, Ont. They offered DeMoya Fluid steel in higher grades as well. Frank Major Tobin's personal gun had Krupp barrels, and although I think they did say they offered the Whitworth barrels [memory] his gun is Krupp. His gun is from the Norwich production. I guess he could have had any barrel product he wanted. The Tobin Grade 55 offered DeMoya fluid steel, with plated internal parts. I have never seen or heard of a Tobin with other than Fluid steel barrels.