when distance to target is closer that optimal: a linear additive damage is granted to weapon damage (NOT AMMO) for all weapon classes + Collector Particle Beam HW, except Sniper Rifles (the bigger the enemy's 3d model the lower this damage bonus can get to (ex: ~30% vs Colossus, ~70% vs YMIR ~90% vs humanoids)) Testing in this 'optimal' weapon range is consistent/reversible for all weapon classes. when distance to target is in the optimal interval - no bonus or penalty due to range is granted. RangeBonusPenalty: Weapons have a optimal range interval to target. WeaponDamageBonuses: Passives, Gear, Adrenaline rush (100% or 140%), Cloak, WeaponResearch(non assault rifles), headshot (50% vs YMIR 75% vs humanoids, geth Prime), Miranda Squad(up to 15%), vsfrozen(100%), PistolDoubleDamage(100%), sniper rifle extra HS damage research (50%), Squad_Ordered_to Attack (50%), vsLifted (100%), vsFallenfromNeuralShock(100%), RangeBonusPenalty, etc Warp 1,1,1,0,1 (warp ammo does *2 damage vs health lifted by biotics ) VsDefenceMod: damage modifier vs non-synthetic health, synthetic health, armor, shields, barriers PowerDamageBonuses: from passive, gear, squad power bonus ,etc. BUG ? WAD ? SquadMates also have this multiplied by weapon_Squad parameter (specific for every weapon, between 0.4 to 0.65 ) Damage upgrades for Assault rifles apply to BaseWeaponDamage unlike upgrades for the other weapon classes which are additive.

ModifiedBaseWeaponDamage: For the most part this is BaseWeaponDamage. WeaponDamage = ModifiedBaseWeaponDamage*(1+Sum(WeaponDamageBonuses))* ModifiedWpnVsDefenceMod

Still work in progress, will update if/when I do more tests.ĪmmoPowerDamage*ScalingFactor + WeaponDamage*ScalingFactor ĪmmoPowerDamage = ModifiedBaseWeaponDamage*Ammo%*(1+Sum(PowerDamageBonuses - RangeBonusPenalty))*VsDefenceMod Reverse engineered based on ingame combat log tests. The following was posted by peddroelm on 21 March 2016.

Mass effect 2 weapon upgrades