so ive been watching tv shows were bullets could be traced back to the exact gun used in shooting or crime. How does that work wouldn’t they need the gun that was used tho to track. or could they proceed with just a bullet
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People have been saying “marking on the bullet” or “rifling” and I’d thought I’d just explain what they mean by that. These markings on the bullet, which is called rifling, are scratches left on the bullet when it is shot out of the barrel.
When the police get a gun they think was the same one, they shoot a bullet out of it and compare the scratches on it left by the barrel to the bullet at the crime scene. If it shows the same scratch marks that proves it was the same gun.
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