Well, it's kinda re-inventing the wheel. The 378 Wby is an awesome cartridge which the 375RUM duplicates and is an awful beast to shoot from what I hear and see. It's like asking someone if they want to be hit in the head with a pic axe handle or baseball bat, either one will hurt real bad. The 375 H&H gets it done and it's all most want to shoot to get that job done.
Like anything though, if you want it bad enough just build it.
The Rem XCR II is almost a pound lighter than advertised on the Remington web page. Mine weighs 6 1/2 lbs without scope, sling or ammo. Shooting 375 H&H through my XCR II in 375 Weatherby is sweet, recoil on factory 375 Weatherby loads is a bit sharp, don't think I'd want to shoot an XCR II in 375 RUM without a brake.
