The Terrible Shotgun

The Terrible Shotgun is a small gun that only appears in Fallout 3. It is the unique form of the Combat Shotgun and has the highest base damage in the small guns class. It is found in the Evergreen Mills bazaar on Smiling Jack (you can kill him with no Karma effect). It can be repaired with Combat Shotguns. (You can also get into a fight with him and just shoot it out of his hand and pick it up before he does. Leave and come back later and he will be neutral again.)

It should be noted that the Terrible Shotgun has a larger spread than the normal shotguns; it does more damage if all pellets hit, but it's harder for that to happen.