Abstract: Objective To study the relation between gunshot distance and shooting entrance characteristics of 92 pistols. Method White cotton fabric on the pork was shot from the distance of 0 m， 0.1 m， 0.2 m， 0.5 m 1.0 m， 1.5 m， 3.0 m， 5.0 m， 10 m， 15.0 m， 20.0 m and 25.0 m with 92 pistols respectively. The shooting entrance patterns of the white cotton fabric and pork were photographed and studied， and the area was calculated by AutoCAD. Results There was a correlation between the shooting entrance patterns and the gunshot distance. Conclusion The gunshot distance can be roughly drawn from the characteristics of shooting entrance. The relation could be used in estimating the firing range in gunshot cases.

Key words: forensic ballistics, shooting entrance characteristic, gunshot distance, 92 pistol

摘要： 目的 研究手枪射入口形态特征与射击距离的关系，为射击距离的推断提供依据。方法 选择92式手枪，在带皮的猪肉上覆盖白色棉布，设计了0 m， 0.1 m， 0.2 m， 0.5 m 1.0 m， 1.5 m， 3.0 m， 5.0 m， 10 m， 15.0 m， 20.0 m， 25.0 m 共12个射击距离，对白棉布和肉皮上的弹孔进行拍照，对比研究不同射击距离的射入口形态特征，并利用Autocad软件对射入口的面积进行计算。结果 白棉布和肉皮上射入口的形态特征与射击距离有一定的相关性。结论 根据射入口的形态特征，能够对射击距离进行推断，对涉枪案件中射击距离的判断有参考价值。

关键词: 法医弹道学, 射入口形态特征, 射击距离, 92式手枪