HARD TO FIND
Box of ten rounds
sold as collector ammo, it is new old stock
box condition may vary
The .577/450 Martini-Henry was a black powder, centrefire round used by the British and British Empire militaries prior to the adoption of the .303 calibre cartridge used in the Lee-Metford, Martini-Enfield, and Lee-Enfield series of rifles alongside the Nepalese Bira gun. This cartridge is also sometimes known as 11.43×60R (61R).