and began to sit down when his Ruger .357-caliber Western-style revolver fell out of its holster and fired a round
Idiot. I have never pulled my britches down without unholstering my carry. Stupid is as stupid does. My bud shot himself in the "buttocks" doing the same thing with a western style revolver. Big dummy.
While I recognize the media rarely gets it right when it comes to what a weapon actually is (pistol, revolver, rifle, etc.), I do think it is funny they state it was a western style revolver. The reason I bring this up is, I think, most "western" revolvers are single action. So if he just dropped it and it "went off" does that mean he was carrying with the hammer back. Something doesn't seem right here to me. Just my 2 cents.