Severnoslav 5.56

The 5.56×45mm (aka the Severnoslav 5.56) is a rimless bottlenecked intermediate cartridge family developed in the late 1890s in Severnoslavia. It consists of the SS109, SS110, and SS111 cartridges. The 5.56×45mm cartridge family was derived from, but is not identical to, the .223 Brashkin.