Firing a shotgun can be difficult, even for those trained to do so.
The recoil from such a gun can cause bruising and it tends to make the users tense, which affects their aim adversely.
Today’s invention is a recoilless shotgun. The diagram shows a plan view of a double barrelled gun (with the butt to the right).
One of the barrels (red) has been flipped about the turquoise axis, so that it now points over the user’s right shoulder.
Pulling the trigger fires both barrels simultaneously -thus there is no kick.
The red barrel would use cartridges with gunpowder only in, so that no-one standing farther than a metre behind could ever be hurt.