can you translate this for those of us who are unfamiliar? (please)
There are NATO spec cartridges. The 5.56mm, 7.62mm, and 9mm. The official SAAMI name is 5.56x45mm, 7.62x51mm, and 9x19mm. The bullet loads are .223, 308, and .355.
All respectively.
The soviets had 7.62x39 which loaded a .310 bullet. Nothing like the 7.62x51.
When a soldier refers to 7.62 they usually refer to the NATO spec cartridge.