The AK47 fires a CARTRIDGE that is 39 mm long, with a 7.92 mm bullet (even though it is CALLED a 7.62 bullet, it is bigger). Typically the bullet is 123 grains in weight, which makes it about as fat as a 30-06 rifle bullet, but shorter. See the link at the bottom of this page:
7.62x39
The bullet used in the 7.62 x 38 CARTRIDGE can be of different weights. The standard bullet loaded for the SKS and AK47 is about 123 grains.
Although there are many variations, most AK47 shoot a ~30 caliber bullet (7.62mm).
About 123 grains.
The standard AK47 fires a 123 grain bullet at 2,400 feet per second. This produces 1,600 ft lbs of energy.
The ak74 is deffinetaly the better choice better rate of fire and better accuracy. However 1 bullet of the ak47 does more damage than 1 bullet of the ak74. So ak47 is mainly for hitpoints and ak 74 is better for fire rate and accuracy.
The AK-47 and AKM use the 7.62x39 cartridge.
it is 300-400 yards. AK74 is 500 yards
It depends on the bullet weights. The 9 mm (AKA 9x19 mm, 9 mm Luger, or 9 mm Parabellum) is faster than the .380 ACP (AKA 9 mm Kurz) except when you compare the lightest .380 bullets to the heaviest 9 mm bullets. If you compare the same bullet weights in each, the 9 mm is always faster.
11.5 mm bullet diameter
the bar because it shoots a 30.6 and an ak47 shoots a 7.62x39 the bar has a bigger bullet the ak47 probbably has better penetration though because it often uses steel core full metal jacket ammo