Die Endoskopie des Waffenlaufes

Schyma, Christian; Brünig, Julia; Madea, Burkhard

doi:10.1007/s00194-016-0086-1

Cited by 13 publications

(14 citation statements)

References 10 publications

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“…Table 1 lists the weapons used in this study. After each shot, the barrel was inspected using a rigid borescope [13] and the staining inside was visually evaluated.…”

Section: Weapons and Ammunitionmentioning

confidence: 99%

Visualization of the powder pocket and its influence on staining in firearm barrels in experimental contact shots

et al. 2016

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The powder pocket or soot cavity is a morphologic characteristic of a close contact shot. In a research project concerning staining inside the barrel, the influence of the powder pocket on these traces was investigated.According to the 'triple contrast method', thin pads containing a mixture of acrylic paint, radiocontrast agent and blood were glued on plastic boxes which were coated with a 3-4-mm-thick silicone layer. The containers filled with 10 % ballistic gelatine, were stored for at least 60 h at 4 °C. Thirty-three contact shots were realized using different pistols and 22 lr, .32 auto, .38 special and 9-mm Luger with different barrel length using subsonic, non-deforming ammunition.The documentation comprised endoscopy, high speed video and computer tomography (CT) of the target models. Using image analysis, the ballooning of the silicone coat was studied (lateral view projection).High-speed video confirmed the actual comprehension of the behaviour of muzzle gases in contact shots. The powder cavity rises in about 1.5 to 2 ms, preceding the maximum of the temporary cavity, and the powder pocket's collapse takes 2.5 to 3 ms.The size of the silicone dome increased with decreasing barrel length. Comparing semi-automatic pistols of 4 in. barrel length in the calibres, .32 auto and 9-mm Luger, there were no significant differences of the powder pocket size. Material transport was observed, against and perpendicularly to the shooting direction. CT showed undermining and gas inclusions inside the powder pocket. A correlation between amount and pattern of the staining inside the barrel and the volume of the powder pocket was not observed.

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“…Table 1 lists the weapons used in this study. After each shot, the barrel was inspected using a rigid borescope [13] and the staining inside was visually evaluated.…”

Section: Weapons and Ammunitionmentioning

confidence: 99%

Visualization of the powder pocket and its influence on staining in firearm barrels in experimental contact shots

et al. 2016

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“…Despite these difficulties, backspatter inside the barrel was detectable by visual inspection in 75% of the shots. Endoscopic examination, even though an endoscope could not be completely inserted into the barrel of a blank gun, nevertheless might be of help to detect possible traces, as it does with regular handguns [ 28 ], by providing an illuminated camera view from the muzzle inside the barrel with adjustable zoom and viewing angle. Our method of inserting cellulose stripes into the barrel (Supplementary Figs.…”

Section: Resultsmentioning

confidence: 99%

Nothing but hot air?—On the molecular ballistic analysis of backspatter generated by and the hazard potential of blank guns

2021

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Blank cartridge guns are prevalent especially in countries with laws restricting access to conventional firearms, and it is a common misconception that these weapons are harmless and only used as toys or for intimidation. However, although their harming potential is well-documented by numerous reports of accidents, suicides, and homicides, a systematic molecular biological investigation of traces generated by shots from blank cartridges at biological targets has not been done so far. Herein, we investigate the occurrence and analyzability of backspatter generated by shots of different types of blank cartridge guns firing different types of blank ammunition at ballistic gelatin model cubes doped with human blood and radiological contrast agent soaked into a spongious matrix and covered with three different variants of skin simulants. All skin simulants were penetrated, and backspatter was created in 100% of the shots in amounts sufficient for forensic short tandem repeat (STR) typing that resulted in the correct identification of the respective blood donor. Visible backspatter was documented on the muzzle and/or inside the barrel in all cases, and in 75% of cases also on the outer surfaces and on the shooter’s hand(s). Wound cavities were measured and ranged between 1 and 4.5 cm in depth. Discussing our findings, we provide recommendations for finding, recovering, and analyzing trace material from blank guns, and we demonstrate the considerable hazard potential of these devices, which is further emphasized by the presentation of a comprehensive overview of the pertinent literature on injuries inflicted by blank guns.

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“…Despite these difficulties, backspatter inside the barrel was detectable by visual inspection in 75% of the shots. Endoscopic examination, even though an endoscope could not be completely inserted into the barrel of a blank gun, nevertheless might be of help to detect possible traces, as it does with regular handguns [27], by providing an illuminated camera view from the muzzle inside the barrel with adjustable zoom and viewing angle. Our method of inserting cellulose stripes into the barrel (Supp.…”

Section: Resultsmentioning

confidence: 99%

Nothing but hot air? – On the molecular ballistic analysis of backspatter generated by and the hazard potential of blank guns

Euteneuer

Gosch

Courts

2020

Preprint

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Blank cartridge guns are prevalent especially in countries with laws restricting access to conventional firearms and it is a common misconception that these weapons are harmless and only used as toys or for intimidation. However, although their harming potential is well documented by numerous reports of accidents, suicides, and homicides, a systematic molecular biological investigation of traces generated by shots from blank cartridges at biological targets has not been done so far.Herein, we investigate the occurrence and analyzability of backspatter generated by shots of different types of blank cartridge guns firing different types of blank ammunition at ballistic gelatin model cubes doped with human blood and radiological contrast agent soaked into a spongious matrix and covered with three different variants of skin simulants.All skin simulants were penetrated and backspatter was created in 100% of the shots in amounts sufficient for forensic STR typing that resulted in correct identification of the respective blood donor. Visible backspatter was documented on the muzzle and/or inside the barrel in all cases, and in 75% of cases also on the outer surfaces and on the shooter’s hand(s).Wound cavities were measured and ranged between 1 and 4.5 cm in depth.Discussing our findings, we provide recommendations for finding, recovering and analyzing trace material from blank guns; and presenting a comprehensive overview of the pertinent literature on injuries inflicted by blank guns we emphasize the considerable hazard potential of these devices.

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Die Endoskopie des Waffenlaufes

Cited by 13 publications

References 10 publications

Visualization of the powder pocket and its influence on staining in firearm barrels in experimental contact shots

Visualization of the powder pocket and its influence on staining in firearm barrels in experimental contact shots

Nothing but hot air?—On the molecular ballistic analysis of backspatter generated by and the hazard potential of blank guns

Nothing but hot air? – On the molecular ballistic analysis of backspatter generated by and the hazard potential of blank guns

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