Well, let's use the right term- they are cartridges (which includes a bullet as part of the cartridge)
The 7.62 refers to bore diameter in millimeters, the second number the length of the cartridge case in millimeters. So one is 3 mm longer than the other.
However, European countries measured barrels differently than the US, and the 7.62x54 Rimmed, used by the former Soviet Union is about .312 inches, and was the standard cartridge for the Moisin-Nagant 91/30 rifle. The 7.62x51, also called 7.62 NATO, is about .308 inches, and is a rimless cartridge. That was the cartridge for the M14 rifle and M60 machine gun.
Needless to say, they do not interchange with each other.
The term "762" refers to a 7.62mm bullet. This is a common size for European guns and the AK-47. The 54 refers to the length of the round or the powder, I forget. Not sure exactly what bullet this describes but that is the diameter size (caliber) of the bullet.
None. A bullet is a bullet, regardless of what material it's made from.
Bullet for my Valentine is a band. My bloody valentine is a movie
.001 inches. Makes a difference depending on what you are shooting, how old the barrel is, etc..
Bullet diameter
I beleive the main difference is the WATTS.The Magic Bullet originally came out as a 350 WATT unit and was then down-graded to a 200 WATT.The NUTRI-BULLET has 600 WATTS of power.And the NUTRI BULLET cost twice as much...
The main difference between a 9mm and a .45 caliber bullet is the diameter. A 9mm bullet has a diameter of 9 millimeters, while a .45 caliber bullet has a diameter of .45 inches. The .45 caliber bullet is larger and generally heavier than the 9mm bullet, resulting in differences in recoil, speed, and stopping power.
The .22 caliber bullet is ABOUT .22 inches wide. A .32 bullet is about .32 inches wide. The bullet will also be heavier due to size.
Bullet diameter, case length.
metric vs inch measurement
As far as diameter, there is very little difference. A .357 is .358 in diameter and a 9mm is .356 in diameter.
The .22 bullet is smaller than the 9mm in size, (about 6mm) and is lighter in weight.