This was a Rigby development during the late 1890’s and was first introduced as the .450 Black Powder Express. The invention of smokeless propellant and the British version (cordite) led to firstly the introduction of nitro-for-black powder loads and later fot full Nitro loadings. While being a successful cartridge for hunting in both Africa and India, the British were experiencing insurrections in many of those parts at the time and a such, the British Army prohibited the import of .45 caliber bullets into India and the Sudan, fearing that those bullets could be used by opposing forces in captured Martini Henry rifles. Most British gunmakers therefore had to come up with solutions and this led the firm of Joseph Lang to come up with the 470 Nitro Express, while other manufacturers likewise developed alternatives to the 450 caliber. Below is a Kynoch Tropical Tin to protect the cartridges from moisture in humid climates
