10.4 Identification of Date, Range and Time of Firing

1. The range (the distance's determination): the gunshot residue's pattern (the tattooing, the smudging, the scorching — the close-range's faces); the shotguns' spread (the distance-vs- pattern); the muzzle's contact (the wound's signature). 2. The direction-and-angle: the wound's track (the path's reconstruction); the scene's holes (the rods'-and-strings; the trajectory's rods); the shooter's position's inference. 3. The time of firing: the residue's persistence (the hands' swabs — the recent-firing's window); the barrel's condition (the fouling, the rust's progression); the case's scene position (the movement's story).