Douglas barrels were drilled from octagon blanks so most did have runout. The flat with the runout was stamped with their name. That flat was supposed to be used as the top or bottom flat. It was a little more work to line your breech plug up that way so naturally you had idiots who ignored that and did it their way creating a rifle that was only good for one range. If you have a Douglas barrel with 2 X's stamped with the name that is a premium barrel with no runout. Have over the years used most of the old makers barrels, Montana, large, Getz, Douglas, etc. Still have a Douglas and a Getz barrel that have never been used, My parts buying kind of got way ahead of my building.