Drawing a firearm is not a lawful deterrent to a mere face slap, in that jurisdiction or likely any other. Further, we know that he drew with the intention of firing, because he made absolutely no hesitation in doing so.There’s no way you could possibly know the last part. And in any case, you’re right the can starts to rise when Doloff reaches for his gun, after being slapped. No one can say if Doloff had made up his mind to shoot, or if he was drawing for deterrent effect. IMO, once Keltner started to raise his can, it was a quick draw... a stupid one given the disparity of weapons.