I upped a Panzer in the MA with 40/40 and it showed that I had 1200 main gun rounds. It began firing as soon as I entered the turret/gunsight and continued to fire until it was down to 87 rounds, at which time it allowed me to fire the rest of the rounds, one at a time, normally.
During the time it was depleting the main gun uncontrollably, it shot with the rate of fire and sound of the pintle gun, even though it was the main gun shooting.
Like I said, once it shot itself down to the normal loadout, it operated normally.
If I went into any other view, driver, hull gun, pintle...it stopped shooting, only while I was in the main gun view did it continue to fire uncontrollably.
Out of the four times I upped the panzer tonight, it happened twice.
Hope I explained that so it makes sense.
I forgot to run film, I was too busy cursing that I was giving away my position with all the shooting