Objective To identify the type of guns and shooting distance by comparing the morphological differences of the entrance and exit on simulated human skull shot with QSZ92 pistol and police revolver. Methods Simulated human skulls were shot from the same distance by the above indicated two pistols with 9mm bullets. Results When shooting at a 2.5-meter distance, QSZ92 can make the hardness-strong skull model being shattered. But for the hardness-moderate skull model, no shattering occurred by the two indicated guns to operate under same condition. The size and shape of entrance made by the two pistols were similar yet smaller than those of their each respective exit. Whereas, for the exit, the QSZ92 made a larger one than the revolver, causing the local outer plate of skull model to crack into a width-smaller inclining plane and producing more skull fragments to burst apart and fall. Conclusion By observing the shape of bullet holes on the simulated human skull model and comparing the bullet-shooting entrance and exit, QSZ92 can be distinguished from the revolver. Besides, the materials and method used here can basically meet Some needs for investigative experiment of gunshot wound formation on skull.%目的 比较92式手枪与警用转轮手枪射击颅骨后子弹射入、射出口形态的差异,以便能更好地判断发射枪种、射击距离等.方法 通过制作仿真颅骨模型模拟人的头部,用两种手枪配用9mm子弹,在相同距离下分别进行射击实验.结果 发现在2.5m距离,当射击硬度较高的颅骨模型时,92式手枪将击碎颅骨模型.选择硬度适中的颅骨模型,在同等条件下两种手枪均不会击碎模型,形成的射入口均小于射出口,两种手枪的射入口大小和形态相近;92式手枪的射出口孔洞面积较大,外板层裂斜面宽度小,有时会产生骨片的崩落破碎,警用转轮手枪的射出口面积相对较小,外板层裂斜面宽度大,未见骨片崩落破碎.结论 通过观察仿真颅骨模型上的枪弹孔洞形态,比较射入与射出口的具体形态,可以区分92式与警用转轮手枪,实验所用材料和方法基本上可以满足枪击头颅案件侦查实验的某些需要.
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