450 Elk Master already exists. Its called 450 Bushmaster. It's almost as good as 45/70 from a ballistics point of fiew but fits in an AR-15 magazine well. Sometimes these new cartridges are created not to be better than an old cartridge but to bring similar performance to a popular platform. The 360 Buck Hammer is simple the result of waning to put a medium caliber straight-wall cartridge into the popular 30-30 lever action size platform. It does not do anything better than other older cartridge but it does meet the arbitrary straight-wall requirement and is easily retrofitted into most existing 30-30 lever action designs.
