think about the endless possibilities in belting for the .303 (as example) in BoB .................every roundtype fired once in history ??!
Hs129 does not fit in the scenario. THE firedepartment for the german Army to hold the soviet counteroffensive were the Bf110s (as max 4 Groups), the Hs123 and Bf109E (in total 3 sqadrons 109 fighterbombers and one squadron of the Henschel) and sure the Ju87 .