[0.10.4] LS Marauder (The Striker (tm))

Base mechanics: 120% damage effectiveness, 50% of physical damage converted to lightning.
What is added: all Added types of damage (Hatred aura, all Added damage support gems (both flat and percentile ones)), all flat elemental damage from items (including weapon), flat elemental damage from auras (wrath, anger).
Boosted by: all Physical damage modifiers (both support gems and passive nodes), Weapon Elemental Damage (passives, support gem, item bonus) and Elemental Damage (both integers on items and % on passive).
Damage lowered with all the negative modifiers, such as -50% from chain or -30% from LMP.

Base mechanics: the projectiles are a secondary effect which shares the base with the melee hit, but is ultimately modified by a negative 30% multiplier (negative 30% multiplier = *0.7).
What is added: all Added types of damage (Hatred aura, all Added damage support gems (both flat and percentile ones)), all flat elemental damage from items (including weapon), flat elemental damage from auras (wrath, anger).
Boosted by: all projectile modifiers (% projectile damage), Iron Grip (affects the whole base physical damage), Weapon Elemental Damage (passives, support gem, item bonus) and Elemental Damage (both integers on items and % on passive), Point Blank.
Damage lowered with all the negative modifiers, such as -50% from chain or -30% from LMP, and -30% projectile damage of LS applies the same as the -30% from LMP.

I unequipped all the other items; left only the weapon and armour on (because the armour had the sockets I needed to link up LS). The gems used were LS+WED+LMP, to be able to easily spot projectile damage difference. I also have one 8% projectile damage node for the purpose of this test, also to augment easier spotting of any damage differences.

Weapons used had to have as similar physical damages as possible (to minimize the difference), and one had to be clean of any elemental modifiers, while the other one had to have some flat elemental damage - the more the merrier, because the projectile damage would be spotted easier. So I picked out these:



The monsters tested on were blue archers in Merciless Ledge with no resistance modifiers (in order to be able to keep distance from them and exactly notice the damage dealt).

Obviously, if M1Combat was right, there would be practically no noticeable difference between projectile damage with those two weapons.

However, the results prove otherwise. The weapon with elemental mods deals significantly more damage with each projectile - therefore, flat elemental mods on the weapon itself also add to the Lightning Strike projectiles!