I think the 338-08 miight just have a following. Look at all the short cartridges that have been introduced the last few years. I'm a 35 cal fan, but will admit that the 338 cal bullets will do MOST of the work that 35 cal bullets will do on the same case: 338-06 vs 35 Whelen. In a Handi, there is no advantage to the shorter cases, but in a bolt, lever or semi action, it is a different story. And a lot of shooters prefer the shorter actions. Will I unload my 35s for the newer 338s, no, but I think it will develop a following, partly due to the excellent selection of bullets in that caliber.
Wally