For example if you use a gun to kill someone how could the bullet possibly be linked to you thousands of guns use the same caliber or a knife even though you would feel terrible looking at the knife wouldn’t it make more sense to just clean it and continue to keep the knife in your home so it make sense that your dna is on it? in movies people always feel the need to get rid of the weapons but i think it would make more sense to keep it unless there’s something i’m missing
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>For example if you use a gun to kill someone how could the bullet possibly be linked to you thousands of guns use the same caliber.
Others have noted the forensics around this (which I agree are likely exaggerated in terms of accuracy of match), but another thing to note is that there may be thousands of a particular gun in a city, but very few of those people will be linked to the homicide. If there’s someone with motive to kill the victim, the victim was killed with a .44, and the suspect has a .44 that was recently fired, the last piece of evidence is really helpful in comparison to there being no evidence of the suspect owning any weapon other than his grandpa’s rusty shotgun that he inherited but never fired.
It’s probably less important with a totally random crime where there’s no link, but then why take chances with the possibility of life in prison?
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