Missing bullets can be identified by ricochet residue at crime scenes
Investigating gun crime is challenging if bullets have been removed from the scene – a tool that can identify bullets from the shavings they leave as they ricochet off surfaces could help
![Missing bullets can be identified by ricochet residue at crime scenes](https://images.newscientist.com/wp-content/uploads/2024/01/19140559/SEI_187852698.jpg)
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