Only 7.62x51. No other 7.62 round is compatible.
.308
No, it cannot.
the standard m16 shoots the 5.56mm, but it can be converted to shoot 9mm, 7.62mm, even .308
no ,7.62 has more impact in the shot you can shoot a .308 in a 7.62 ,but not 7.62 in a .308
Big game
Each weapon will exhibit a preference for one or more loads. You will have to buy and shoot as many as you can afford to find out which yours prefers.
It is 75 308 000.
76.2cm
it depends on the rifle. 7.62mm is the same as .30cal. the mosin nagant series of rifles shoot 7.62x54R. your rifle is probably marked with the correct calibur. Good answer. A 7.62 Nato or American rifle will shoot the 7.62x51 round or .308 Winchester round (don't try firing 7.62x51 round in a rifle marked .308 Winchester though, it's not safe.) An AK-47 fires a round called the 7.62x39 and the .30-06 rifle fires a round sometimes called the 7.62x63. As you can see, 7.62 is a popular bullet size!
No.
Whether you need a 5.56 or a 308 depends what you intend to shoot. A .308 is intended for larger game like deer and elk.
The cartridge in question is the .300 Winchester Magnum, and not the .308 WinMag. The .308 cartridge is about 16mm shorter than the .300 Winchester Magnum casing. The two are NOTinterchangeable.