I have a beautiful pre-war Commercial Oberndorf 98 Mauser Sporter in .270 that was the personal rifle of Mr. Dumond who from my understanding made barrels in the 1930's and 1940's. His barrels were custom order only and I believe JACK O'CONNOR spoke of having a Springfield barreled with one. Elmer Keith mentioned liking them. Dumond died in 1943 or 1944 and the business was sold to someone, but they couldn't make a go of it. I have heard he made the majority of his barrels for pistols. HTH Jerry