Double-Barrel Shotgun (Point Lookout)

The Double-Barrel Shotgun is a small gun added to Fallout 3 with the Point Lookout add-on. Unlike the sawed-off shotgun, which has existed in the game since release, the has both its barrel and stock intact. Even badly damaged it does more damage than a Drum-Magazine Combat Shotgun but it also fires both barrels at once, which forces you to reload immediately after each shot. However, with its speedy reload time of 0.8 seconds, you won't be empty for very long. The drawback to this is ammo consumption, as again, each trigger squeeze expends two shells.

Obtaining
One may be found relatively early in the add-on inside the Naval Recruitment Center. It may also be sold by the shopkeepers or found on random enemies (particularly Swampfolk, who commonly carry it.) You can find one in the Wrecked Sea Tub in a surfaced wooden boat containing a skeleton, shotgun shells, and pre-war money. It is also obtainable at the Homestead Motel, in the main lobby behind the counter and in Room 1G.

The tribals that invade Calvert Mansion during the The Local Flavor quest also carry this weapon.