[Fisneaky]

(1)

It had eight machine guns of .303 calibre each, mounted four in each wing. The guns were spaced one close to the fuselage, two mid-wing, one further out. The eight guns were normally synchronized to 250 yards. In other words the four in each wing were sighted so that the bullets from all eight converged at that distance, in front of the Spitfire. Experienced fighter pilots used to close the pattern to 200 yards. The successful pilots succeeded because they did not open fire until they were close to the target.

You see - it's easy with google.