Gotta admit when I do a search on ammoseek I get 25 - 30 hits on factory ammo availability...450/400 NE is a great cartridge but a 500/416NE makes a lot more sense....it however seems that history and nostalgy still rules....
500/416 NE is the perfect double for a visiting hunter or an experienced African one....it has the perfect ballistics for all African game....
All up what does a Krieghoff chambered in that cartridge weigh?