• Leigh Hlavaty, Sarah Avedschmidt, Kelly Root, Jeffrey Amley, and LokMan Sung.
• From the *Department of Pathology, University of Michigan, †Wayne County Medical Examiner's Office; ‡Department of Pathology at the University of Michigan, Ann Arbor; and §Firearms and Toolmarks Identification Unit of the Michigan State Police Forensic Laboratory, Lansing, MI.
• Am J Forensic Med Pathol. 2016 Dec 1; 37 (4): 284-290.

AbstractProper interpretation of gunshot wounds is vital for the forensic pathologist and requires experience and expertise, as well as consultation with a firearms and ballistics expert and careful scene investigation in cases of atypical gunshot wounds. This study is the first large-series examining ricochet gunshot wounds involving different firearm calibers. Typical gunshot wounds created from 4 handgun calibers (22 Long Rifle, 9 × 19 mm Parabellum, .40 Smith &Wesson, and .45 Automatic Colt Pistol) and 2 rifle calibers (5.56 and 7.62 mm) were compared with wounds caused by bullets of those same calibers ricocheting off commonly encountered surfaces (concrete, asphalt, aluminum traffic signs, clay brick, and dry wall). Porcine skin, a human skin analog, attached to sheets of cardboard serviced as witness panels for capturing the entrance wounds. Examination of over 150 handgun and rifle entrance wounds established that every caliber and every ricochet surface resulted in atypical features, including irregularity in size or shape, lack of marginal abrasion, or other injuries on the surrounding skin. The most significant factor influencing the variability of the ricochet wounds was the surface the bullet deflected off before striking the body.

12 keywords...

hide…