Shotguns have been used in the Space Pirate Captain MacTaggart series by various characters.
Remington Model 870[]
The Remington model 870 is a Pump action 12 gauge shotgun often seen in the hands of Leslie Kennedy
as well as the main weapon for the Midori Numbers.
Mossberg 500[]
Various Mossberg 500 shotgun models have been used by Captain Mandarin and Lieutenant McMurdo
Double Barrel shotgun[]
Old fashioned Double barrel shotguns are used. Blackmask personally favors them.