I go to a pay for play public range. I love it right before deer season for rifle brass. Many will show up with bags full of boxed ammo. They shoot it all up, leave the bag, and most times put the brass back in the box. Most times the recipt is still in the bag as well. My jaw hit the floor when I saw the recipt for a box .300 RUM and knowing the guy left two boxes of the brass behind in the boxes. I am waiting for someone to leave me some .45-70 GOVT. brass.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.