It is hardly a "record" but is sure is odd.

http://youplay.it/play/bm_GameMove.asp?GameID=124088&UserID=kduke

Panoramix and I in a 2 vs 3 game. We shot all 3 enemy planes down from the same hex at the same time.

(No, I did not say that right- it was not all three from the SAME hex on the map, but while we were both in the same hex.)

We took a number of other shots individually, but the "final" shot in all three cases came from the same hex.

4 MGs makes a pretty potent offense.