Investigation of the variability in the tool marks produced by modified blank firing pistols on fired 7.65 mm projectiles |
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| Institution: | 1. Uskudar University, Faculty of Engineering and Natural Sciences, Forensic Science Department, Istanbul, Turkey;2. Uskudar University, Institute of Addiction and Forensic Science, Istanbul, Turkey;3. Turkish Gendarmerie Forensic Department, Istanbul, Turkey;4. Hacettepe University, Institute of Sciences, Division of Forensic Science, Ankara, Turkey;5. Istanbul Technical University, Graduate School, Telecomunication Engineering Department, Istanbul, Turkey;1. Department of Pathology, King George’s Medical University, Lucknow, India;2. Department of Prosthodontics, King George’s Medical University, Lucknow, India;3. Department of Pathology, Dr. Ram Manohar Lohiya Institute of Medical Sciences, Lucknow, India;4. Department of Forensic Medicine and Toxicology, King George’s Medical University, Lucknow, India;5. Department of Biochemistry, King George’s Medical University, Lucknow, India;1. University of Texas Southwestern, 1801 Inwood Rd, Dallas, TX 75390-9132, USA;2. Friendly Foot Care, PC, 50 W. 94th Place, Crown Point, IN, USA;3. Former Research Scholar, Department of Anthropology, Panjab University, 160014, Chandigarh, India;4. Department of Forensic Medicine & Toxicology, Medical College Building, All India Institute of Medical Sciences, Jodhpur, Rajasthan 342005, India;5. Department of Anthropology, Panjab University, Chandigarh, India;1. Centre for Forensic Science, Department of Applied Sciences, Faculty of Health & Life Sciences, Northumbria University, Ellison Building, NE1 8ST Newcastle Upon Tyne, United Kingdom;2. Northumbria Sport, Northumbria University, NE1 8ST Newcastle Upon Tyne, United Kingdom;3. King’s Forensics, Department of Analytical, Environmental & Forensic Sciences, King’s College London, SE1 9NH London, United Kingdom;1. Hacettepe University, Institute of Sciences, Division of Forensic Science, Ankara, Turkiye;2. Hacettepe University, Department of Chemistry, Ankara, Turkiye;3. Üsküdar University, Forensic Science Department, Istanbul, Turkiye;1. Institute of Psychology, University of Wroclaw, ul. Dawida 1, 50-527 Wroclaw, Poland;2. Department of Forensic Sciences, Faculty of Law, Administration and Economics, University of Wroclaw, ul. Uniwersytecka 22/26, 50-145 Wrocław, Poland;3. Smell & Taste Clinic, Department of Otorhinolaryngolory, Technische Universität Dresden, Fetscherstr. 74, 01307 Dresden, Germany |
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| Abstract: | Firearms identification has an important place in forensic ballistic investigations since the weapons are widely used in criminal offences. Firearm examiners resolve many case files, through the use of automatic systems or comparison microscopes. Advanced forensic technologies like BALİSTİKA helps to record and analyze non standard ballistic evidence. In today's world, with the ease of access to materials and production technique information, pistols modified from blank firers are frequently encountered as crime tools. In this study, the characteristics of 7.65 mm fired cartridge cases obtained by controlled shots from blank firing modified pistols were examined, and their detection performances were compared by means of the Balistika system. Although distinctive differences are not expected after successive test shootings, balistically important changes were seen after the use of blank firing modified pistols and the 3D imaging system proved to be useful in observing such differences. The analyses showed that the modifications in weapons lead to variation in the ballistic characteristics and reduce the accuracy of the detection performance, which may result in flawed forensic decisions. It was also found that the deviations in ballistic impressions of modified blank firing pistols were greater than that of standard fabricated and hand-made pistols. This unique study contributed to the forensic sciences literature by focusing on the impact of modified weapons on ballistic characteristics. |
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| Keywords: | Firearm identification Blank firing modified pistol Fired cartridge case examination 3D imaging |
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