the mosin-nagant, which uses a 7.62x54r cartridge, has been used since the russo-japanese war and is still being used in afganistan today
a rifle cartridge developed in 1891 for the mosin nagant
"the mosin-nagant, which uses a 7.62x54r cartridge, has been used since the russo-japanese war and is still being used in afganistan today" What is the definition of "7.62x54r"?