The Double Barrel has the highest damage-per-pellet of any shotgun, and has the potential to deal the highest damage-per-shot of any weapon in the game. If the pellets all hit their target, the shotgun is able to deal 240% damage.
It can use two common types of ammunition (buckshot and slugs) for different purposes.
It has a very light weight, and is the second-lightest firearm in the game, next to the Magnum.
Like all shotguns, it has a very short effective range.
Also like all shotguns, the damage it deals is dependent on the number of pellets that hit the target, meaning that while it has the potential to deal a massive amount of damage, it also has the potential to deal next to none.
It is only found at three locations.
It has a meager capacity of 2 shells, and loads them one at a time.