Gunshot Entrance Wound Abrasion Ring Width as a Function of Projectile Diameter and Velocity

    Volume 36, Issue 1 (January 1991)

    ISSN: 0022-1198

    CODEN: JFSOAD

    Page Count: 7


    Randall, B
    Forensic pathologist and pathologist, Laboratory of Clinical Medicine, P.C., Sioux Falls, SD

    Jaqua, R
    Forensic pathologist and pathologist, Laboratory of Clinical Medicine, P.C., Sioux Falls, SD

    (Received 7 October 1989; accepted 26 February 1990)

    Abstract

    The relationships between gunshot entrance wound abrasion ring widths versus projectile diameter and velocity, using foam-backed deer hides as targets, were investigated. At a fixed velocity, abrasion ring width increased with increasing projectile diameter but decreased in proportion to the central defect diameter. For fixed-diameter projectiles, very slow and high velocities produced minimal abrasion width. Maximal abrasion width occurred at intermediate velocities.

    The authors postulate that abrasion width is a function of the ratio of projectile velocity and the maximum deformation velocity of the target skin. The largest abrasion width occurs when the ratio is one. Using a projectile velocity known to produce maximum abrasion width at an initial warm temperature, then decreasing the target deformation velocity by cooling, produced the expected results of decreasing abrasion width.


    Paper ID: JFS13014J

    DOI: 10.1520/JFS13014J

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    Author
    Title Gunshot Entrance Wound Abrasion Ring Width as a Function of Projectile Diameter and Velocity
    Symposium , 0000-00-00
    Committee E30