>>63861631I donโt think shotguns are a great counter to drones. They arenโt a great anti-human weapon in general, especially if you keep them loaded wih birdshot (low ammunition capacity, short range, heavy shells, more recoil, etc.), so you either have some guy carrying 2 long guns and their ammo (and being encumbered a lot) or some guy carrying only a shotgun (and being much less effective at regular fighting).
Also, most people probably get hit by drones when not aware that they are even coming, in which case the shotgun does nothing. Even if you see the drone coming, you still have to drop your rifle if you have one, draw the shotgun, aim, and fire, which is difficult. Even if you have the shotgun ready when the drone comes, a drone traveling at even 60 kph will cross effective shotgun range in 3 seconds, giving you little time to aim and fire.
Shotguns probably arenโt completely useless against drones, but their practicality is not great and their effectiveness is probably very limited.