Our club range not only wants you to pick up your brass, they require it! Range rules are quite specific: if you bring it in the gate, you take it with you when you leave (bullets and boolits excepted, of course ). The are scrap buckets on each firing line where those who don't reload (or collect brass for recycling) can deposit their brass for those who do but we've enough scroungers that it's rare to find much in them. Last week, though, I did score 50-some once-fired MKE 7.62x51s but only because I was a couple benches down when the guy swept them up.
Bill