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Input gunshot wound

Input gunshot wound is formed under different conditions. In forensic practice, to distinguish between fire damage depending on the distance from which the shot had been made: in focus from close range in the limits of the components, related to the shot (predpolesie air, gases, soot shot, flame, grain powder) and with a long-distance - out of bounds of these components. It is natural that each type of weapon, the action of the components, related to fire, distributed on different distances that depends on the design of the weapon, the type of gunpowder and the number in charge.

Fig. 61. Education input gunshot wounds and stanz-mark" when shot.

If at the moment of shooting the muzzle of the barrel firmly attached to the body, it is usually denoted as the shot. In such conditions predpolesie air causes damage before the bullet that flies in the already formed the wound. After the bullet wound in the channel and under the skin burst gases and components related to fire. They can cause rupture of skin wounds, which usually gets a cruciform shape. 61), and to have a destructive effect on the course of wound channel. It finds soot shot, polushariya grain powder particles service (if the weapon was firmly attached to the body parts covered with clothes. The skin around the input of a gunshot wound in such cases covered with a small amount of soot, but in the course of wound channel it is found in abundance, especially if the cartridge was loaded smoke of gunpowder.
When tightly attached to the skin (clothes) the muzzle of the weapon can be formed his imprint - "Stans-mark" (stamp imprint muzzle end)of importance for forensic medical and forensic expertise. Configuration of the print muzzle end one can judge about the weapon.
Some types of firearms due to structural features (presence muzzle-brakes) the muzzle cannot rest against a barrier - rests against the barrel jacket, and his muzzle end of it 2-5 see If this "focus" there is a kind of zakapyvanii at some distance from the entrance wounds, respectively Windows shell (compensator, muzzle-brake device) (Fig. 62, 63).

Fig. 62. "Stans-brand" (stamp-print).

Shot at a distance of 3-5 m forms the entrance wound in other conditions. When flying bullets from a bore her immediately in flight ahead with the following components, which damage the skin, forming tissue defect. As a rule, cross breaks occur when fired from the weapon of the strong actions (rifle). The shots of guns usually these do not cause damage. Around the input of a gunshot wound may occur ring "air sadnenia" as a consequence of the impact predvoleneho air (Fig. 64).

Fig. 63. Cruciate tear and nature of deposits, soot when shot from a gun calibre 7,65 mm

Fig. 64. Sednenie on the skin around the input wounds from exposure predvoleneho air (the ring air sadnenia).

Particles of soot shot, polushariya grain powder and other related components shot settle around the wound and penetrate into the initial part wound channel.
Particles of soot have minor mass and after the shot moves depending on the type of weapon at a distance of 40 see more flying (up to 3 m) with bigger mass polushariya grain powder and they fly over a larger area (Fig. 65). Therefore, already at a shot from a distance of more than 1 m from a rifle around gunshot wounds can not detect the additional components of the shot, and the determination of the distance from which the shot had been made, proving difficult (Fig. 66).

Fig. 65. Deposits of related components of the shot, depending on distance (PSM-5,45).
a - 2 cm; b - 20 cm, 10 cm, d - 5 see

Fig. 66. Actions components, accompanying shot depending on the distance.
1 - the muzzle; 2 - predpolesie air (3-5 cm); 3-gases shot (to 10 cm); 4 - soot (up to 40 cm); 5 - grain powder (up to 5 m); 6 - the bullet.