Well I think the 338 Federal will have a following just as the 358 W . There seems to be no rush from every one and there uncle to buy a rifle so chambered , but there will be a cult as with the 358W.It would be better if loaded Ammo would not cost as much, and be in line with the 308 and 3006 .Why buy a gun so chambered when you can shoot the 308 / 3006 for almost half the price ? I have a 338 F and I tend to reload my own instead of buying from federal @ almost 50 Bucks a box for nolsers . If Federal would pour out the ammo cheap , I am sure sales for rifles would increase . The two could work together on this .One does not need to have high school to figure that out !!
Chambered in the AR ,it might appeal to some who like the black rifles .Otherwise if your in to something where the round might serve you well, then you might get a good deal on a rifle, and roll your own as with the 358W crowd .