A shotgun, also called a "scattergun", is a firearm designed to shoot a multitude of lead or steel balls of varying sizes. This makes it very effective at hunting game, greatly increasing the weapon's hit potential. However, the accuracy and power found at close range diminish rapidly as the target gets farther away. Shotguns designed for military use are often called "combat shotguns".
The Big Boomer is a sawed-off shotgun with the same break action, 12 gauge that fires both shells at a time, delivering 14 pellets at a time instead of the typical 7 of other shotguns.
Like the common sawed-off shotgun, the Big Boomer has the same general characteristics with high burst damage, low damage-per-second, high weapons spread, but slightly better statistics. The only big difference is that the common sawed-off shotgun is classified as a holdout weapon, whereas the Big Boomer is not.
Within the games files exists an unused texture for the Big Boomer. It uses the Fallout 3 model and only differs from that in the color of the wood and the words Big Boomer written down the side of the handgrip.