Best dogfight gun?

20 20mm hits to bring down a modern fighter? Where are they located?
I'd say it would take some pretty selective hit location to place 20
hits on any fighter (well, maybe a Frogfoot) and still have the target
perform at any level close to its pristine capability. Since the M61's
shells are coming in trail about 50 feet apart they will be clustered
- meaning the hit damage will accumulate pretty much in the same area.
Bye-bye wing surface, and now control that airplane! Of course, if the
shot comes in from the six o-clock, the length of the fuselage is
subject to damage. Nowadays a gun shot is so rare that the shooter
will most likely hold the trigger down to see what happens, instead of
the half-second burst most good shooters use in a smooth tracking pass
when firing on the dart target. In that case, the armor may survive
but nothing else will after say 50-150 hits.
Walt BJ