The 7.62×54mmR is a rimmed rifle cartridge developed by the Russian Empire and introduced as a service cartridge in 1891 The 7.62×39mm (aka 7.62 Soviet or formerly .30 Russian Short)[5] round is a rimless bottlenecked intermediate cartridge of Soviet origin that was designed during World War II.
都是 俄國貨
Blessed are they who expect nothing for they shall not be disappointed !!