Well, again, he's seen me use a regular Rockchucker a hundred times to load for the Wolf - he must have been...uh...distracted...
Nope, you must have a way to neck down from .338 to .308 caliber. S1 uses three downsizing dies made by RCBS, I think, to get the necks down in three steps. You could do the same thing with three type-S bushings in a sizer made to accept them...