According to headstamp checklists, the Czechs. began manufacture of the 7.62x54r in 1952. The cartridge is referred to as the “vz.59”, so I have to assume that the “59” is NOT in reference to the date 1959? I also have read that this cartridge was made for the “vz.59” machinegun. Was this cartridge/MG combination adopted pre-1959? What other rifles/MGs did the Czechs use in this caliber?