Jim shut down HE when his sales dropped to almost zero after the .300 WSM was introduced. I was sorry to see it, but that is how it goes.
The Hornady RCM brass that I have goes .530" on the head and the Hornady .376 Steyr measures .500" so there is considerable difference. The .376 Steyr case is derived from the 9X64 case, and the Ruger and Ruger Compacct Magnum is not.
The .348 Win itself was descended from a black powder case, .50-110 IIRC...jim
