The 7.62x51mm NATO bullet consists of a gilding metal jacket and a lead antimony slug. It is a boat tailed bullet (rear of bullet is tapered) and weighs 145 or 150 grains. The tip of the bullet is not colored. The base of the cartridge is stamped with the year of manufacture and a circle that has vertical and horizontal lines, sectioning it into quarters. Its spread (accuracy standard) for a 10-shot group is no more than 12 inches at 550 meters. However, the rounds used in Fallout are not NATO. In Fallout 3, .308 rounds were used, which are nearly identical to the 7.62x51 NATO round. In other Fallout games, the round referenced is actually 7.62x39, which are used by AKs.