I think the 338Ultra stoked with a 210XLC is the most impressive sumbitch I've ever hit the switch upon.
Despite that glowing accolade,it is largely a niche tool,within my stable.
As to the 7mm vs 30cal debate,I've always said I'd not point a 30 at somethin',that'd make me balk at the 7em-em.
I'm a Seven Slut,but house enough 30's,that I can play on both sides of the fence.
'Course I can shoot a lil' bit and that don't hurt...................