I posted a similar thread a couple of days ago but it went to vbulletin and was not respondable. I fire only new ammo and a few times at the range other marksmen ask if they can have my spent ammo to reload. I always say yes and they sweep it up and take it. I live in a state that requires the test brass that comes with a new gun be sent from the ffl at the gun shop to the state police. This casing has the imprint of my guns firing pin on the primer and is the fingerprint for my gun. This casing is kept at the state police in the event a crime is commited with a gun and spent brass is found at or near the scene the poilce have something to lead them in the direction of a registered gun. Now im wondering if I should not give my brass in the event one of these guys has some other purpose for my brass other than reload. I know this is far fetched but I dont know the guys im giving it to and dont want to have some explaining to do. In the future Im not gonna give it up and probably just take home and scrap it when I get enough. Just wondering what you more experienced guys think. Is this something I should worry about?