Real per-shot damage rolls from players with the mod against the theoretical ±25%.
We only use your own shots from the mod: damage on penetration and the shell's nominal damage. Killing shots and HE are excluded — their damage is capped or depends on armour.
The theoretical curve is a normal distribution truncated at ±25% of nominal. The mean roll is how far total damage sits above or below nominal.
The mod reads nothing about enemies: only the results of your own battles.
Data: Lesta Games API