A patterned abrasion caused by the impact of a cartridge case may simulate an atypical muzzle imprint mark.

Kramer, Lena; Nadjem, Hadi; Glardon, Matthieu; Kneubühl, Beat P.; Pollak, Stefan; Große Perdekamp, Markus; Pircher, Rebecca (2016). A patterned abrasion caused by the impact of a cartridge case may simulate an atypical muzzle imprint mark. International journal of legal medicine, 130(3), pp. 751-757. Springer 10.1007/s00414-015-1281-4

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In contact shots, the muzzle imprint is an informative finding associated with the entrance wound. It typically mirrors the constructional components being in line with the muzzle or just behind. Under special conditions, other patterned skin marks located near a gunshot entrance wound may give the impression to be part of the muzzle imprint. A potential mechanism causing a patterned pressure abrasion in close proximity to the bullet entrance site is demonstrated on the basis of a suicidal shot to the temple. The skin lesion in question appeared as a ring-shaped excoriation with a diameter corresponding to that of the cartridge case. Two hypotheses concerning the causative mechanism were investigated by test shots: - After being ejected, the cartridge case ricocheted inside a confined space (car cabin in the particular case) and secondarily hit the skin near the gunshot entrance wound. - The ejection of the cartridge case failed so that the case became stuck in the ejection port and its mouth contacted the skin when the body collapsed after being hit.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Service Sector > Institute of Legal Medicine > Forensic Physics (Ballistics)
04 Faculty of Medicine > Service Sector > Institute of Legal Medicine

UniBE Contributor:

Glardon, Matthieu and Kneubühl, Beat P.

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0937-9827

Publisher:

Springer

Language:

English

Submitter:

Antoinette Angehrn

Date Deposited:

05 Nov 2015 13:41

Last Modified:

15 Sep 2017 09:42

Publisher DOI:

10.1007/s00414-015-1281-4

PubMed ID:

26496804

Uncontrolled Keywords:

Cartridge case; Failure of cartridge case ejection; Gunshot injury; Kinetic energy; Muzzle imprint; Ricochet

BORIS DOI:

10.7892/boris.72817

URI:

https://boris.unibe.ch/id/eprint/72817

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