Please explain how mass produced guns result in unique markers qualifying as evidence of crimes in the court of law. It seems like it would not warrant the validity it is given in court with all the manufacturing quality control measures, etc. TY
In: Engineering
No barrel is perfectly smooth. Every barrel has small imperfections – cuts, grooves and bumps. When a bullet is forced through the barrel at high speed, these imperfections cause the bullet to have a fairly unique “imprint”. These may be sufficiently unique to give a strong indication that a bullet was fired from a particular weapon. It is not an “evidence of crime”, it is “evidence that this bullet was fired from this gun”.
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