Well, the fact is it has the same rim and head diameter as the 8x57, and virtually same diameter behind the shoulder making the body sizes close enough to not matter. Seems rather suspicious to me who copied who. I've heard that the Ordnance dept. set a specific velocity goal and the x57 case was lengthened until that goal was reached with the powders the gov't was working with in those days. Don't know for a fact but it sounds plausible to me. Those cats back at the turn of the last century were doing some crazy stuff.
"You can lead a man to logic, but you cannot make him think." Joe Harz "Always certain, often right." Keith McCafferty
