QUOTE (Dakka Dakka @ Aug 16 2012, 09:51 AM)

The rules are pretty clear (if counterintuitive). First the GM decides if a called shot is possible. If he so decides, you receive a negative equal to the total armor rating of the target. There is no partial negation, whether part of the protection is transparent (bulletproof glas) or invisible (mystic armor, troll dermal deposits/orthoskin under clothing etc.) is irrelevant. If there is no path from the barrel to the target without going through the barrier (which is armor in this case) there can be no called shot to circumvent armor.
Called shot says "Target an area not protected by armor. The attacking character receives a negative dice pool modifier equal to the target's armor."
1. A barrier is a barrier and it is not armor. Yes, the barrier's armor rating is added to the armor for the the purpose of armor penetration and the damage resistance test. It is also only added for an attack.
2. A barrier is not worn by the character and consequently is not part of a character's total armor until an attack is made.
3. Called shot does not specify "Total armor" in its text.
4. A called shot (the action) is not an attack. The attack is only made once the simple action to attack is made.
5. Things like troll's natural armor and orthoskin provide a bonus to the armor rating, which makes it the modified armor rating. If the AP from a weapon does not factor into called shots to reduce armor then natural armor, orthoskin, or barriers should not either.
Really, it's all a moot point since called shot for increased damage is almost always going to be better. I don't think even with crappy AP is getting -1 dice for -1AP will ever be efficient. Plus you can call shot for damage through a barrier.
--
QUOTE (Draco18s @ Aug 16 2012, 10:08 AM)

Um...did you even read his post?
Yes I did, and misinterpreted because of some vagueness.