Here's an excellent example of the type of info I'm looking for and I found this by accident. The only thing better would be a pilots report
It refers to the 30mm AC on the Ka-50
Quote:
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.....two ammunition boxes in centre-fuselage. Front box contains 240 AP rounds, rear box 230 HE rounds. Selectable rapid (550 to 600 rds/min) or slow (350 rds/min) fire, with bursts of 10 or 20 rounds.
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If 10 round bursts are assumed that gives the helicopter 23 he and 24 AP/Sabot "bursts" of fire...... if 20 round are assumed --and given these are similar ROF's to the Apache AC and that may be more typical use than 10 rounds we are looking at 11 HE and 12 AP/Sabot or just split the difference and go with 12/12.
20 rounds fired or two second bursts seems to be a recurring theme with the 30mm AC's