I have three scenarios I think is happening concerning how archery damage is calculated.
First Scenario is that Bow and Arrow damage is added together. Bow and Arrow Armor Pen is added together. The shot made is the total Armor Pen being applied to the total Damage being applied.
Second Scenario is that Bow and Arrow Damage is not added. Bow and Arrow Armor Pen is also not added. What happens here is Bow Damage and Armor Pen is applied separately from Arrow Damage and Armor Pen. So if a Bow has 4 dmg, 8armp… and an arrow has 6 dmg 8 armp, there is a hit for 4d/8a, and one for 6d/8a per shot.
Third Scenario is that Bow and Arrow Damage is added together, applies bow armor pen and ignores arrow armor pen, resulting in a bug.
I’m leaning towards it being the Second or Third Scenario based on testing. But I don’t have the means of being thorough. I’m wondering if anyone has done some of the legwork already and can provide insight on how this system actually works.
Conclusion is Scenario 2 is True. Bow Damage and Armor Penetration and Arrow Damage and Armor Penetration are separate entities and apply as two separate damage events.
A bow with 12 damage 8% Armor Pen with an arrow with 18 damage 9% Armor Pen would deal damage as if it was a weapon doing 12 dmg 8% armor pen and another weapon dealing 18 dmg 9% armor pen at the same time.