[mustang]

During WW2 I trained on an aircraft fitted with twin Vickers synchronised guns. Identical to WW1 installations

We were taught that anything more than 100 yards was out of range, and attempting to "walk" the tracers (whatever that is supposed to mean) on to the target was a big no no. The flight path of tracers, as viewed from the cockpit of a fast moving aircraft is deceptive, and not to be relied upon to calculate lead or defletion distance ahead of the target. The gunsight and angle off in a curve of pursuit was the only reliablw method.

Mustang