Quite the collection. I always wondered how they do ballistics matching -- I learned it's from the tooling marks on steel barrels which get transferred to the cartridges & bullets.
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Good question. I wonder if those tooling marks he talked about in the video are so microscopic that no two barrels are exactly the same. So that means if you recover a suspected murder weapon for instance, you could fire a few rounds from it and see with a microscope that your slugs & casings match the crime scene evidence casings.What I wonder is how do they differentiate one pistol from the rest as manufacturing becomes more consistent and the prolific numbers of a model are all made almost exactly the same. One example, Glock 19. How can they tell your Glock 19 shot that recovered slug over my Glock 19? And what about polygonal rifling? How does that mark a bullet?
Hmm... said the FBI Firearms Forensic Examiner?gun forensics is largely hollywood bull**** ive come to find

What I wonder is how do they differentiate one pistol from the rest as manufacturing becomes more consistent and the prolific numbers of a model are all made almost exactly the same. One example, Glock 19. How can they tell your Glock 19 shot that recovered slug over my Glock 19? And what about polygonal rifling? How does that mark a bullet?