At today s crime scenes investigators routinely compare suspect firearms to projectile bullets and cartridge cases collected at the scene. They also use "tool mark methodology" to obtain specific clues. If a firearm is not collected, then the caliber and sometimes make can be determined from cartridges and projectiles. The discovery of gunshot residue can only indicate a shooting occurred. But what if it could tell us more? The new goal: Pinpoint the exact model of gun or pistol used at a crime scene using only gunshot residue. Scientist Igor K. Lednev, with the Department of Chemistry, University at Albany, SUNY, is working to develop a more rapid and accurate method of tracing ammunition used in a crime.
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机译：在当今的犯罪现场，调查人员经常将可疑枪支与现场收集的弹丸和子弹盒进行比较。他们还使用“工具标记方法”获得特定线索。如果没有收集枪支，则可以从子弹和弹丸中确定其口径，有时还可以确定其制造能力。发现枪击残留物只能表明发生了枪击事件。但是，如果能告诉我们更多呢？新的目标：仅使用枪械残留物精确定位在犯罪现场使用的枪支或手枪的确切模型。纽约州立大学奥尔巴尼分校化学系的科学家Igor K. Lednev正在努力开发一种更快速，准确的追查犯罪中使用的弹药的方法。
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