A little more in-depth...
7.62x25 Tokarev (Autopistol round)
7.62x28 Nagant (Russian gas-seal revolver cartridge)
7.62x39 Soviet M43 (As used in SKS and AK-47)
7.62x45 Czech (As used in VZ-52's during the Grenada invasion, etc)
7.62x51R (European name for our .30-30 Winchester)
7.62x51, aka 7.62mm NATO (Commercially known as .308 Winchester, they did the development, NOT Remington)
7.62x54R (Which some of us remember as the old .30 Russian round for the Mosin-Nagant rifle)
7.62x63 (European name for the .30-06 Springfield)
That's the first time I've heard the .30-06 referred to as the .30-06 Government, too. I've seen it listed as simply .30 Government, Model of 1906. I do, however, have plenty of .30-40 Krag brass headstamped .30 USA, meaning .30 U.S. Army.
Typically, when the boyz in da hood refer to "
Busting a cap with their 7.62", they're talking about 7.62x39 Soviet M43 ammo. That's good to know in case you're working the ammo counter at Walmart and they come in looking for 7.62 rounds. You'll know what
NOT to give them.