USSO 8mm cartridge

The USSO 8mm cartridge, also known as USSO 8x7mm is a rifle cartridge developed in 1686 as a standard for small arms in new weapon developments within USSO countries. The design rationale was initially that 8mm is both a nice round number, and also slightly bigger than the Raspur Pact 7.62x67mm counterpart. Field tests in 1687 and 1688 proved the effectiveness of the cartridge. The USSO 8mm cartridge was first used in the machine guns mounted on the USSO T86 main battle tank. In 1689 Barbary hosted a conference in Halfquart where arms manufacturers of all USSO countries were invited to start the development of a standard rifle for the USSO.