Not much a shotgun but somthing to show all users, Guess a semi automatic variant of it would make a nice shooter
Man-portable nordenfelt gun of the Soviet era that apparently provided 'near minigun' performance by combining the ROF but to be suitable for a soldier to handle. It uses the 7.62x39 round but the ammo supply was limited as the weapon is magazine fed.
The Pribor 3B still worked but was also quite hard to control due to the recoil force, Cartridge ejection is downwards BEHIND the magazine area as the weapon uses a gas/recoil operaton similar to that use