That'd depend on what you want it to do when it arrives, and at which angle it's fired. Military speaking an assaoult rifle with open sights is considered effective to about 300 yards for an average soldier. The actual bullet will travel longer though, and the longest confirmed kill from an assault rifle was at 4 kilometers. That one was unintentional, fired blindly at optimum trajectory.
7.62x39
it is 300-400 yards. AK74 is 500 yards
About 123 grains.
Although there are many variations, most AK47 shoot a ~30 caliber bullet (7.62mm).
The standard AK47 fires a 123 grain bullet at 2,400 feet per second. This produces 1,600 ft lbs of energy.
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.
Accurately? About 400 meters. When fired at about a 41 degreee angle, it will travel about 2 miles. But at that range, will not hit anything (except the ground)
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 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.
The AK-47 and AKM use the 7.62x39 cartridge.
In excess of 1.5 miles.
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