when I was in the army we were taught roughly how to shoot at a helicopter, but generally the idea was "you have a rifle (not a shotgun), you're not gonna hit a very fast flying thing, but here's ROUGHLY how much to anticipate with it if you have to try".

If we're not talking about long-range drones which fly at proper altitudes, and instead something one could even viably shoot at, then we're talking like 1000 smaller than a helicopter, but with similar speeds. Like the size of the armament on those drones is usually bigger than the drone itself.

I'm fine with us telling Russians to shoot at them, they're just gonna be wasting their (already waning) munition.