QUOTE (Veggiesama @ Sep 5 2009, 08:41 PM)

I just want to rez this topic from the grave, because everyone seemed to be in agreement (including a dev?), but I don't understand how it's right.
Correct me if I'm wrong: Calling a shot requires a Take Aim Simple Action (and I assume you don't add the normal +1 die for that, like using an image magnification system), but it also says you have to spend a Free Action to specifically call the shot.
So if all you have left is a Simple Action, you can't shoot and use Adept Centering. Even if you wait until the next Action Phase, you'll have to use Adept Centering during that phase, and the Take Aim action says you lose the benefits of taking aim if you take "any other kind of action--including a Free Action--at any time." So I can't see a single situation where taking aim and Adept Centering ever work together.
So... am I missing something?
QUOTE (Page 146 @ Anniversary Reprint)
Call a Shot
A character may "call a shot" (aim for a vulnerable portion of a target) with this Free Action. See Called Shots, p. 161. This action must be immediately followed by a Take Aim, Fire Weapon, Throw Weapon, or Melee Unarmed Attack.
QUOTE (Page 53 @ Street Magic)
Adept Centering (Adepts Only)
Adept Centering is a variation of Centering (p. 189, SR4) available only to adepts and mystic adepts that allows an initiate to reduce negative dice pool modifiers to Physical and Combat skills by her initiate grade—as long as she can physically perform her chosen method of centering.
QUOTE (Page 198 @ Anniversary Reprint)
Centering requires a Free Action, which must be taken in the same Action Phase as the Drain Resistance Test.
Adept Centering is a Free Action but needs only be made in the same Action Phase. Call A Shot needs to be made immediately before you fire, or before the Aim action sequence prior to firing. It is therefore valid to Centre, then Call A Shot for +4 DV followed up by shooting someone in the face for no penalty if you've initiated to Grade 4. You can, in fact, Call A Shot, then repeatedly Aim and use the Free Action from a later Action Phase to Centre.