German cannon are "belted" with generic rounds that each have a charge averaged from the total destructive power of all the rounds together. IE: Historically your ammo is belted in a sequence of five rounds, three of which do 1pt of damage, one that does 2pts, and one doing 5pts. In game, each round instead does 2pts of damage.
The result is both good and bad. It means the rounds will all do more damage than the historically least destructive round, but at the same time is a disadvantage since you also lose the extra punch of the individual high-power rounds.
I THINK this applies to other weapons like the Browning M2. While historically the Deuce would be belted with varying mixes of ball and API depending on availability, theater (IIRC, API was more common in the Pacific due to the combustability of most Japanese aircraft) and preference (some squadrons in the PTO took it on themselves to belt a larger mix of API than was standard practice) I THINK our Browning does the average damage of X rounds of ball and Y rounds of API.
