Macmx, I have a Hagn action in .30-06 by Steve Dodd Hughes and a .375 H$H Magnum on a Hagn action by Hartman and Weiss. Both makers say the Hagn action is better suited to a RIMLESS cartridge. Dodd Hughes went into the technicalities of this on an article he wrote on the Hagn many years ago which I believe is in an old copy of the American rifleman. It used to be on the web, I can call Steve and ask him for a copy if you want one. Traditionalists will want a rimmed cartridge obviously, best, Mike