Since I am a member I know the rules. However I can only pickup MY brass. I'm not exactly sure if I did go back after the event was over how I could even tell which brass was mine, or for that matter how much I shot in 9 and 5.56 on any stage.
And I know, 5.56 is a useless round. Can't even kill people with it. I only use it because I can't afford a decent tazer.