IMO when all is said and done, Wilson had every right to shoot Brown because Brown was attacking him in the vehicle. It really doesn't matter if he was going for the gun or not.
That basically mirrors Wilson's claim -- that he was authorized to use lethal force by virtue of Brown's initial punches through the door of the patrol vehicle.
MS. WHIRLEY: In your mind him grabbing the gun is what made the difference where you felt you had to use a weapon to stop him?
OFC. WILSON: Yes. Once he was hitting me in the face, that enough, was in my mind to authorize the use of force.
MS. WHILRLEY: Okay. So if he would not have grabbed your gun while he was hitting you in the face, everything was the same, but he would not have grabbed the gun, you still would have used deadly force?
OFC. WILSON: My gun was already being presented as a deadly force option while he was hitting me in the face.
OFC. WILSON: Yes. Once he was hitting me in the face, that enough, was in my mind to authorize the use of force.
MS. WHILRLEY: Okay. So if he would not have grabbed your gun while he was hitting you in the face, everything was the same, but he would not have grabbed the gun, you still would have used deadly force?
OFC. WILSON: My gun was already being presented as a deadly force option while he was hitting me in the face.
Vol. 5, pp. 236-237