Cops are after criminals. Criminals are normally dumb. The smart ones generally aren't caught.
Cops can often catch a criminal just by asking questions, the criminal will eventually trip up over the lies. Heck, many just confess.
Assuming the average criminal will know to have a couple barrels and to catch his brass from any shootings would actually waste time for the cops - it's a quick check for them, no great loss if they're wrong, jackpot if they're right.
I haven't performed any barrel changes on my guns, I'm willing to be that most people on this board have mostly original barrels.
Still, you DO run into the fact that 1000x rounds out of 1000 new guns have more in common with each other than the first round and the thousandth round out of the same gun.
Cops can often catch a criminal just by asking questions, the criminal will eventually trip up over the lies. Heck, many just confess.
Assuming the average criminal will know to have a couple barrels and to catch his brass from any shootings would actually waste time for the cops - it's a quick check for them, no great loss if they're wrong, jackpot if they're right.
I haven't performed any barrel changes on my guns, I'm willing to be that most people on this board have mostly original barrels.
Still, you DO run into the fact that 1000x rounds out of 1000 new guns have more in common with each other than the first round and the thousandth round out of the same gun.