some states like massechussettes curtesy of mitt romney require registering a spent casing with the police. thats the sole reason.
some companies like ruger send proofing cases. while legal to send in as it is fired from the gun its totally useless for ID purposes since proof firings are used with over pressure cartridges heh.
the dirty secret about these id schemes is they are a total waste since a gun canot be matched up to a cartridge once its been fired a couple dozen times after the test cartridge. its even difficult to match a gun to a bullet in most modern firearms. its seldom used in actual courtroom proceedings and typically carries little weight in court due to the huge margin of error.
you cant really fingerprint a firearm with any real accuracy. DNA tests are far more accurate than firearm to cartridge or bullet matchups unless there is a very distinguishable mark unique to just that gun and thats rare.
mainly these stamping schemes and case id schemes are just means of funneling taxpayer money to political cronies.
i get em in some guns and they just go into the reload bucket. i like getting them because it means the gun really was fired at the factory and didnt blow up and i get a case for reloading
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent
Last edited by JonM; 12-11-2012 at 06:22 PM.