[JG14_Jagr]

Using the laws of probability, I believe it was estimate that around 1 bomber should be shot down for every 800 or so 88mm shells fired. In 1944 based on the actual number of rounds used by the dedicated flak batteries and the numbers of actual bombers shot down it was found to be closer to 10,000 88 fired per bomber destroyed. Overall during the war the number was something like 18,000 per bomber destroyed.

Keep in mind that something like 25% of the B17's returning wopuld have some type of flak damage.. but that would include everything from mangled to a single pin hile in the skin.

Flak at low levels with 37mm/20mm/25mm class weapons was a lot more elthal because the lead compensation was far less complex and the hits were usually direct hits causing more damage.