Can someone explain it to me how the police can trace bullets like fingerprints? And can you do it without the actual gun? Reason I'm asking is b/c in No Country For Old Men, lewelyn has a rifle and he's t he g ood guy,kinda. So why would he have a rifle to fight the bad guys when it could trace back to him? Many movies are like this.
Yes and no. I was asked to testify in a case...so, being me, I fucked with them.
I had 3 barrel blanks, from one 10' bar stock, rifled by Harry McGowan. The same button was used to rifle them.
The piglets had their meathead push several bullets through each blank, take the bullets to THE LAB and, of course, they couldn't tell which bullets came from which barrel.
The judge was irate.
I exsersplained to the dumb motherfucker that a dozen guns in order( by serial number) would have probably been pulled or broached with the same button or tooling and the balistics would be too similar to differentiate.
You could be 90+ % sure a bullet came from a specific piece with those tests(as long as the bullet didn't smash a bone, or a car door or or or...is it enough evidence alone to pluck a bullet from a corpse to put a dual citizen(insert slur here) in the Lincoln chair on it's own ?
You be the judge( pun much)
ADVICE to future hit men: When you buy, buy 3-4 with consecutive serial numbers