5 out of 138 (3.6%) in one study published in a journal. "Incapacitation by a shot to the head is achieved when the bullet penetrates the cerebrum; however, numerous bullet trajectories, including a shot between the eyes, do not achieve this penetration."[0]

I share the suspicion, but it's apparently likely enough, that you can't immediately conclude it wasn't suicide just because there were two shots.

[0] https://en.wikipedia.org/wiki/Multiple_gunshot_suicide

Well, the other theory would be that 3.6% of suicides are actually murders disguised as suicides.

You're assuming a bullet to the head kills you every time. That is not always the case.

For example, not long ago the actor who played George's boss from Seinfeld survived shooting himself in the head and continued to call 911. http://www.cbsnews.com/news/seinfeld-actor-shoots-self-in-ap...

As someone who survived a couple of bullets to the head over thirty years ago (one penetrating the skull and causing moderate optical cortical brain dameage) I can corroborate this...

Yeah, I agree, its just that Webb wasn't any normal suicide-his exposes on the CIA and their ilk just add a ton of fuel to the fire that you wouldn't have with a run of the mill suicide.

Look at the # of people who survive being shot in the head once, and you may see an answer to your confusion. A person can survive being shot in the head once, and if a person is suicidal the chance that they are lucid enough after the first shot to deliver the second is, often enough it seems, quite high.