• When a firearm is discharged very close to or in contact with the skin surface, the gases produced by the explosion pass into the tissues along with the bullet and cause considerable laceration of the skin and subcutaneous tissues. Under these conditions the bullet entrance wound has a ragged appearance, especially over the skull where it may be stellate in appearance.
• At close range there is usually some blackening and tattooing of the skin around the bullet entrance wound, while the hair in the region of the wound may be singed, and there may be some skin burning and abrasion in relation to the hot gases. In contact wounds, the discharge passes into the tissues through the bullet entrance opening and powder deposits as well as blackening may be observed I the depths of the wound.
• When a firearm is discharged at a range of about 15 cm, the lacerating and burning effects of the gases are usually lost owing to the dispersion and cooling of the gases before they reach the skin. In these conditions the bullet entrance wound is circular in shape and is surrounded by a narrow zone of skin abrasion. Blackening of the skin is sometimes seen, while tattooing is invariably found at this range.
• Beyond a range of 15 cm, all traces of blackening usually disappear, while the bullet entrance is opening remains circular in shape.
• Powder grain deposits may still be present, and are usually seen up to ranges of about 40-60 cm, but the limit within which powder grain deposits can occur varies with different weapons and different cartridges.
(Contributed by Dr Sudhir Gupta)
• At close range there is usually some blackening and tattooing of the skin around the bullet entrance wound, while the hair in the region of the wound may be singed, and there may be some skin burning and abrasion in relation to the hot gases. In contact wounds, the discharge passes into the tissues through the bullet entrance opening and powder deposits as well as blackening may be observed I the depths of the wound.
• When a firearm is discharged at a range of about 15 cm, the lacerating and burning effects of the gases are usually lost owing to the dispersion and cooling of the gases before they reach the skin. In these conditions the bullet entrance wound is circular in shape and is surrounded by a narrow zone of skin abrasion. Blackening of the skin is sometimes seen, while tattooing is invariably found at this range.
• Beyond a range of 15 cm, all traces of blackening usually disappear, while the bullet entrance is opening remains circular in shape.
• Powder grain deposits may still be present, and are usually seen up to ranges of about 40-60 cm, but the limit within which powder grain deposits can occur varies with different weapons and different cartridges.
(Contributed by Dr Sudhir Gupta)
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