![]() 158 gr 0.38" Special plain lead bullet will only penetrate one side of a human skull.125 gr 9 mm PB fully jacketed bullet will generally penetrate both skins of a car door.158 gr 0.357" Magnum semi-jacketed bullet will penetrate outside skin of car door and sometimes just penetrate the inside skin.158 gr 0.38" Special plain lead bullet will generally not penetrate the outside skin of a car body.0.177" Steel air gun dart will penetrate to shank, in skin, at 120 ft/s.Steel BB or 0.177" lead pellet at 450 ft/s will burst a human eye.Steel BB or 0.177" lead pellet at 200 ft/s will detach part of the coloured portion (iris) of a human eye leaving what appears to be a second pupil.Steel BB (0.170" ball bearing) at 200 ft/s will make a hole, but will not penetrate 4" plate glass.0.22" Lead air gun pellet at 600 ft/s will penetrate 4' plate glass.0.22" Lead air gun pellet at 450 ft/s will make a hole in, but not penetrate 4" plate glass.0.177" Lead air gun pellet requires a minimum of 300 ft/s velocity to penetrate fresh human skin.0.22" Lead air gun pellet requires a minimum of 250 ft/s velocity to penetrate fresh human skin.Other than for general interest, this type of test is of little use in the scientific examination of firearms-related situations.įor the sake of interest, some indicators of the penetrative powers of various types of ammunition follow: Many factors, including the moisture content, knot content, tree age and even the separation of the boards, can give rise to highly variable results. This, as with any other type of penetration test, is plagued with inaccuracies. In the past, one of the standard tests performed to assess bullet and cartridge performance was the penetration of pine boards of various thicknesses. It is also of considerable general interest if for no other reason than to show how often the movie makers and novel writers make appalling blunders. Ventral/Dorsal–Equivalent to belly-side and back-side of a body in anatomical position.The penetration of various materials can be of great assistance in the investigation of shooting incidents.A feature that is posterior to another is closer to the back of the body when the body is in anatomical position. A structure that is anterior to another is closer to the front of the body when the body is in anatomical position. Anterior/Posterior–Equivalent to the front and back of a body in anatomical position.A feature that is lateral to another is farther away from the midline of the trunk. A structure that medial to another is closer to the midline of the body’s trunk. Used with respect to the midline of the trunk of a body in anatomical position. Medial/Lateral–Equivalent to towards the middle or towards the edge.Less precisely but still occasionally used in the trunk of the body itself to indicate whether something is closer to (proximal) or farther away from (distal) something else. A structure that is distal to something else is farther away from the limb’s point of attachment. A feature that is proximal to something else is closer to the limb’s point of attachment to the trunk. Usually used to orient the positions of structures and features along the limbs with respect to the trunk of the body. ![]()
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