Also, it's not that I think the Savage is an inferior action. In fact it has a lot of attributes that I find superior to other actions. I wouldn't trust a cartridge of that size in a Remington, Ruger, Winchester, Browning, Howa, etc. because they're all about the same size and designed for the same size cartridges. I think the Weatherby MKV's made for the 378 size cases are bigger actions and probably heat treated differently to where they're better suited for that size cartridge. The same could be said for the Savage and Remington actions that came from the factory chambered for the Lapua.