The .700 Nitro Express (17.8×89R), also known as .700 H&H (Holland & Holland), is the largest commercially made big-game rifle cartridge. The cartridge has a propellant load of 250 grains of powder and a 1000 grain solid bullet. The cartridge was It was developed by Jim Bell and William Feldstein and the gun made by Holland and Holland. The guns are rare and ammunition is expensive. The .700 nitro express is now the most powerful commercially available hunting rifle cartridge in the world. The round has a solid drawn brass cartridge case and a solid copper jacketed bullet. The brass cartridge case is headstamped KYNOCH .700 Nitro. The price includes U.K. delivery and no licence is required to possess inert rounds in the UK if retained as part of a collection or display. Sn 22787:16