Can a rifle shoot down a plane?

Answer 1

The variables for this question are nearly infinite, however...

...if the plane is light enough

...if the plane is small enough

...if the weapon is of sufficient caliber

...if the shooter is of sufficient skill and has had sufficient training

...if the plane's altitude is within the maximum effective distance of the weapon

...it is possible, but not entirely probable that a plane can be shot down with a rifle.