I didn't say that to be a smartazz Rosco. John Burns figured out a long time ago that a Sendero weight rifle was the lightest workable configuration for LR hunting. That 338 Remington factory rifle will cripple you without a brake. Put something like a Fat Bastard on it and it is certainly mangageable but still a handful to shoot a lot, and you NEED to shoot it a lot.
The Army has figured out that a 300mag with high BC heavy bullets will run with the 338's. I'd consider a RUM and you might could find one in a Sendero for sale.
