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通过对1010枚样本弹壳的观测统计,八五式轻冲在射击10100发枪弹范围内,各类痕迹呈一定的规律性变化。击针头痕较为稳定,痕底特征反映好,初期和后期之间仍有同一认定价值;击针头次生痕、拉壳钩在棱边的刮擦痕、抛壳挺次生痕具有较高的对接比对价值。另外,各类痕迹的位置、形态在一定范围内变化,检验鉴定时不能轻易作出否定,应综合加以分析判断。
According to the statistics of 1010 sample shells, light trails of 85 types were shot within the range of 10,100 rounds of firing, and all kinds of marks showed regular changes. The first mark of stitching needle is relatively stable, the characteristic of the bottom of stitching is well reflected, and the same identifying value is still found between the initial stage and the late stage. The secondary marks on the needle head and the scraping marks on the edge of the hooking hook shell are quite high Match the value of docking. In addition, the location of various types of marks, morphology changes within a certain range, the test can not be easily identified negative, should be comprehensively analyzed and judged.