alexa A Quick Determination Method of Reloaded Pistol Cases by Observational Studies: A Precaution for Forensic Crime Scene Investigation
ISSN: 2157-7145

Journal of Forensic Research
Open Access

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Research Article

A Quick Determination Method of Reloaded Pistol Cases by Observational Studies: A Precaution for Forensic Crime Scene Investigation

John Wang*

Professor, California State University Long Beach, Criminal Justice/Forensic Science, Long Beach, USA

*Corresponding Author:
John Wang
California State University Long Beach
Criminal Justice/Forensic Science
1250 Bellflower Blvd
Long Beach, 90840, USA
Tel: 562-985-4741
E-mail: [email protected]

Received date: August 31, 2016; Accepted date: October 17, 2016; Published date: October 24, 2016

Citation: Wang J (2016) A Quick Determination Method of Reloaded Pistol Cases by Observational Studies: A Precaution for Forensic Crime Scene Investigation. J Forensic Res 7:344. doi:10.4172/2157-7145.1000344

Copyright: © 2016 Wang J, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

A quick determination whether a fired cartridge case is a reloaded case or not has several practical implications for responding officers, crime scene technicians, and criminal investigators in the field. Such a determination would give them a precaution: (1) The fired case may have been be fired by one or several weapons. (2) A quick determination of reloaded and fired pistol cases should assist criminal investigation in narrowing down the type of ammunition used, the type of suspects involved, and a possible link between the reloaded case(s) and the reloading machine at the suspect's residence. (3) If the case goes to the court, the expert opinion from the examiner would be challenged heavily by the defense. Currently, little information and research is available on the topic. Based on the observational examinations of reloaded and fired pistol cartridge cases (N=100) with three types of calibers (.45, .40, and 9 mm), this study offers three practical guidelines for a quick determination of these reloaded and fired cases by naked eyes or a magnifier. These three guidelines should be relevant and useful in identifying reloaded and fired pistol cartridge cases at the scene and as reference later in comparing them in the lab to improve criminal investigations.

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