You are right (see how easy that is?). Here is the relevant testimony from Wilson, page 214:That would be Wilson's testimony to the Grand Jury. He was being attacked through his car window by Brown. He then pulled his gun, and pointed it at Brown, at which point Brown grabbed the gun - which is when he fired 2 shots, hitting Brown in the hand.
Wilson was quite clear on why he didn't wear a taser (it was uncomfortable), why he didn't use pepper spray (it could affect him as well as Brown, as Wilson was sitting in his car at the time) and why he thought it necessary to pull his gun (he was worried Brown would knock him unconscious or kill him).
https://www.documentcloud.org/documents/1370518-grand-jury-volume-5.html
Brown was attacking Wilson at the time. You state, "reaching for Wilson's gun was the reasonable response from Brown, regardless of what happened before." The reasonable response is to stop attacking the cop and either run or submit. You don't make a play for a cops gun.
