79式微型冲锋枪子弹射击顺序的研究

目的研究79式微型冲锋枪发射子弹的排序。方法对已知顺序实弹射击取样,扩大观察弹头、弹壳上发射过程中形成的痕迹,通过统计、归纳,从中发现与排序有关的痕迹特征。结果壳体肩部圆点痕,弹底边缘压擦痕、拉壳钩痕与发射顺序有关。结论壳体肩部圆点痕、弹底边缘压擦痕等痕迹的有无、位置及轻重程度,对判断79式微型冲锋枪弹壳发射顺序有较可靠的参考价值。

Determination of shooting sequence of model 79 micro-tommy gun

To determine the shooting sequence of bullet shot by model 79 micro-tommy gun,we took samples of live firing bullets and extended our observation into the marks of both bullets and cartridge cases,and we use statistic analysis and logic inclusion to find trace characteristics related to the shotting sequence.We found that dot-imprints on cartridge case shoulder,pressing and scraping prints on the edge of cartridge case bottom and marks on the hook of cartridge-case-extractor are all related to the shooting sequence.We concluded that both the appearance of dot-imprint,its position and the depressed degree of pressing and scraping prints and marks are credible evidence to infer the cartridge case sequence of model 79 micro-tommy gun.