This is all just IMHO. The 8mm Rem mag case is a good design to neck up or down but as a 8mm it has the German "Nazi" cures. Anything 8 mm is never going to realy be popular in the USA. Neck the 8mm mag down to 7mm and its the 7STW, a great round. Go up to the 358STW and again a good cartridge but like alot of folks I just cant like any 8mm.
the 8mm used in the military rounds prior to the 50's was not even the same round you normally find today. the older 8mm came in at .321 inches which has created a problem and an entirely different round now that we are more accurately measured with .323inch.
the 8mm Mauser you can buy off the shelves today is also known as 8x57is or js. where as its older wartime counterpart was 8x57I i believe, which really has nothing to do with the American standard 8mm Remington magnum introduced in 1978........ lonoke Arkansas(Remington's ammo development plant) is hardly Nazi occupied these days, they can't stand the humidity
anyways, hard to say that something is never going to be popular in the US, i mean look at all the guys running around with the short mags....... just kidding, don't shoot.
oh, and yes i do concur that 7mmSTW is a pretty sick round.
