(Received 9 November 1992; accepted 26 February 1993)
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Gunshot residues (GSRs) sampled in proximity of the hole left by a bullet on the clothes of a person wounded during a homicidal robbery, have been examined by the authors, on request of the Court. These investigations have shown that gunshot residues GSRs can be considered consistent with a shot discharged by a pistol SIG SAUER, found on the crime scene, with Sellier & Bellot (S&B) ammunition. Actually, these cartridges leave residues in which tin is present together with lead and barium, as found in the examined GSRs. An evaluation of the firing distance and a comparison between scanning electron microscopy with energy dispersive X-ray analysis (SEM-EDX) and Instrumental Neutron Activation Analysis (INAA) have been also performed.
Senior Research Chemist, ENEA-INN/PCM, CRE Casaccia, Rome,
SEM-EDX Laboratory Officer, Criminalpol, EUR, Rome,
Stock #: JFS13530J