Ammo varies in weight & power but most AK-47s work with a muzzle velocity of around 2,346 feet per second.
The standard AK47 fires a 123 grain bullet at 2,400 feet per second. This produces 1,600 ft lbs of energy.
7.62x39
No it does not.
About 123 grains.
Although there are many variations, most AK47 shoot a ~30 caliber bullet (7.62mm).
If by fast you mean rate of fire- thre have been rifles that can fire 3000 shots per minute. But not the AK47. If you mean the speed of the bullet, I have one that shoots at 4500 feet per second. But it is not the AK47. The AK has no great power, speed nor accuracy. It is cheap to make, works in harsh environments, can be used by a poorly trained soldier.
in order for the bullet to go a certain speed it needs a certain amount of twist to it. also so it can go farther.
no
It will be marked on the barrel.
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 country of Mozambique has a AK47 with a bayonet attached to the barrel. Here is a reference link http://en.wikipedia.org/wiki/Flag_of_Mozambique
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.