What does a revolver have to do with it?
It leaves no brass laying around fro the police to retrieve?
The story confuses "bullet" (the projectile), "case" (the brass cylinder containing the powder, primer, and projectile), and "cartridge" (which generally refers to a complete loaded round of ammunition, unfired).
You can't really microstamp a bullet because (a) it never contacts the firing pin; and (b) it is generally badly damaged upon impact.
Never mind that any microstamp will be quickly eroded by friction, and that replacing a firing pin is a matter of minutes with the proper tools.
Shell casings aren’t left on the scene from a revolver so the, mircoprint BS evidence wouldn’t exist because the perpetrator would walk away with it unless they reloaded.
The cases are not ejected to be found at the crime scene.
It is expected that the case would then be ejected by the the gun, and left behind for the super detectives to discover. Kali gun grabbers have watched TV. They know how these things work.
Revolvers don't eject. They haven't gotten the memo.
Cause ... Effect
Another clueless anti-gun fanatic heard from.
I do not now nor have I ever owned a handgun of any type. That is no bar to learning and knowing about them, before making a fool of myself.
So I know the answer to that question.
"A little knowledge is a dangerous thing..."