Do You Think the Gun Was in Billy Joe's Mouth?

Three forensic experts who reviewed the case files also concluded that the gun was in billy joe's mouth. One of them, a former medical examiner, told us it was a fact, not athe. So if the gun was inside his mouth, doesn't that completely invalidate the grand jury's findings that billy joa accidentally shot himself? Since no one accidentally shoots themselves with a gun in their mouth,. Either you do it to yourself or some one does it to you, wha does it matter?