Weapon:
base_dmg - weapon base damage (Random (min, max) damage)
Ammo modificators:
DT_mod1 - Damage Treshold modificator 1
DT_mod2 - Damage Treshold modificator 1
DR_mod- Damage Resistance modificator
Armor modificators:
DT - Damage Treshold
DR - Damage Resistance
SIMPLE formula is...