|關於the Fallout 2 and Fallout Tactics ammunition round，參見7.62mm。|
.308 armor piercing rounds are able to punch through lighter armor with ease. They exhibit a slight lack of actual wound-causing potential, but the high base damage of the round easily rectifies this.
.308 jacketed soft point rounds exhibit all-around better penetration ability, but the nature of the ammunition also greatly increases the wear-and-tear on the weapon being fired.
.308 hollow point rounds are especially devastating, considering the high impact of the round plus the flesh-shredding tip, but even light armor is able to resist a large amount of the damage they cause.
Ultracite .308 rounds deal increased damage to Scorched enemies and are exclusively used by compatible weapons with prime receivers. They cannot be found in the world and are only available via crafting at a tinker's workbench.