GrauGeist
Generalfeldmarschall zur Luftschiff Abteilung
Several autoloader style shotguns like the Remington Model 11 and Browning Auto-5, use the recoil energy to cycle the next round into the chamber, which considerably reduces recoil.Too much recoil I think.
I must admit I have often thought that the Ukrainians should be fitting Bren guns to high speed fixed wing drones for use as drone killers and for strafing. They would need to fit a bigger magazine but the Ukrainians are good at improvisation so that should not be a problem.
As far as I know the Bren was the only MG that had negative recoil - that means it moves towards the target when fired - so that makes it ideal for fixed wing drones where you do not want a short burst to stall the drone.
The belt-fed shotguns follow this same design.