In any sort of heavy manuevering it would not reload at all. For example, in a steep dive to try to hit the top of a tank, the pull out after a attack run, the turn to make another run or any sort of evasives.
To get multiple shots in a run you'd have to make a steady run in at a shallow angle, and even then you'd be very lucky to get three shots I think.
I am not against the aircraft really, just pointing out that for it to not be excessively gamey there needs to be special rules programmed for it.
