Thanks for all the advise. I figured I would just get a few bloopers. Im most talking about old target shells mostly plastic hulls etc. I just planned to shoot them up at informal clays. If they are of questionable origin or storage or look like reloads I just reclaim the shot for reloading or melt down the larger shot sizes for casting bullets.
Im not one of those guys that are so cheap they wont let anything go to waste and disregard safety and common sense. I shoot with a guy thats been using of a stash he has of 20 ga wads in his 16 ga loads. Hes amusing for a few stations to be squaded with him on the skeet field. Every load is a blooper and he misses a lot. But after a few rounds it can become distracting.