Additionally, Russian ammunition manufacturer LVE (Novosibirsk Cartridge Plant) states, "The cartridges cal.7,62×54R are produced by various producers around the world. Producers mark these cartridges differently, and this leads to confusion among the customers – 7.62х53; 7.62×53R; 7.62х54; 7.62×54R. The confusion is based on difference in rounding out (rounding up or rounding down) the case length (case length of our cartridges is 53.65-0.2 mm). The letter "R" indicates a case rim. After Russia’s joining European Commission (ПМК) a definite name of this cartridge was determined – 7,62×54R. Therefore, you may use cartridges of caliber 7.62х54R freely with your arms as 7.62×53R."