PROOF Load

This, together with the 6×39 experimental was an attempt by the SADF during the mid 1970’s to develop small arms ammunition for local conditions. The 6×45 version used imported 5.56 NATO cases and components, but the 6mm Musgrave bullet. Ultimately the project did not prove succesful or cost effective and this lead to the adoption of the standard 5.56 NATO cartridge late in 1976. Although not successful as a military cartridge, it went on to become a very popular sporting cartridge in South Africa.