You haven't done much long gun hunting have you? What you described is WHY the best fighter pilots were long gun hunters. What you described above is called leading your target. Without practice and training, the pilot is a piss poor gunner.
Since you need the same character to do both tasks (fly and shoot), wouldn't you get a -2 multiple actions penalty? That would seem to be a disadvantage to having a weapon that is fired by the pilot.
I would think so. Probably why they are only used on fighter craft and I would think that it is an expert system that actually controls (shoots) the weapon while the pilot tries to get the gun platform into position while NOT getting shot by other fighters.
