Oh.
But in reality 12000 rds per plane is total nonsense.
That figure has nothing to do with reality.
There were pilots that shot down five planes in one mission.
That figure is the amount of rounds fired at planes, from the ground.
--for another interesting figure, obtain the number of .30 caliber rounds shipped to the Pacific 1941-45, then divide it by the number of enemy casualties attributed to small arms fire in that period of time--