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首页> 外文期刊>The Australian journal of forensic sciences >The effect of intermediate targets on the spread of pellets from shotguns
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The effect of intermediate targets on the spread of pellets from shotguns

机译：中间目标对shot弹丸散布的影响

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摘要

The distribution pattern of pellets due to shotguns is an important criterion for the determination of shooting distance. Many factors affect the distribution range, such as characteristics of the gun, the presence and type of intermediate targets, factors related to distance, and the physical variables of the environment. The aim of the present study is to evaluate the effects of different intermediate targets on the distribution range of pellets from a shotgun. Glass, mica auto glass, tempered auto glass, fibreboard, flat iron, aluminium, and grey cotton fabric were used as intermediate targets. The intermediate target was placed one metre away from the main target and shotgun. The spread of pellets was evaluated on the main target with seven shots by using either cartridge numbers 0 or 9. The spread of pellets was significantly larger in the presence of all intermediate targets tested with cartridge number 9 (p<0.05) but not in the presence of grey cotton fabric (p=0.33) with cartridge number 0. The distribution range of pellets increased in the presence of intermediate targets. This difference was more pronounced in higher density intermediates. In crime scene investigations, the presence and/or type of intermediate target should be taken into account to make information more accurate.
机译：shot弹枪造成的药丸分布模式是确定射击距离的重要标准。许多因素会影响分布范围，例如枪支的特性，中间目标的存在和类型，与距离有关的因素以及环境的物理变量。本研究的目的是评估不同中间目标对from弹药丸分布范围的影响。玻璃，云母汽车玻璃，钢化玻璃，纤维板，扁铁，铝和灰色棉织物被用作中间目标。中间目标放在距离主要目标和shot弹枪一米的地方。使用编号0或9的弹药筒在7个主炮上评估了弹丸的散布。在使用9号弹药筒测试的所有中间目标的存在下，弹丸的散布明显更大（p <0.05），但没有筒号为0的灰色棉织物（p = 0.33）的存在。在存在中间目标的情况下，颗粒的分布范围增加。在较高密度的中间体中，这种差异更为明显。在犯罪现场调查中，应考虑中间目标的存在和/或类型，以使信息更加准确。

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