http://www.patreon.com/ForgottenWeapons Cool Forgotten Weapons merch! http://shop.bbtv.com/collections/forgotten-weapons Czechoslovakia adopted the 7.62x45mm cartridge after World War Two, introducing both a vz.52 rifle and vz.52 light machine gun using the round. It was about 200 fps faster than the Soviet standard 7.62x39mm. It was marginally more effective in the LMG, but not so much that the Czechs put up a big fight to keep it, and changed over to the 39mm round in 1957. At that time, they