I remember someone asking a Friend of mine at a match how he tells what brass is his to recover? Without missing a beat, TW said, “Oh, that’s easy. All of mine says “45 ACP” on the bottom.” That’s my take all all brass, it’s all worth something and if everyone’s left enough to peak my interest I’ll get it all.
Years ago, after I built my first wet tumbler, I ran a batch a lot longer than my usual 30-45 min run and found out that 24 hours, permanently turns brass a dull green color everywhere the pins can touch. It was real easy to see in shooting bays, would be awful in grass though.
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Folks running 38 super/other expensive brass stuff would run a stripe or two around the OD. Generally with a hunk of wood that had a hole in it, ledge to put the stripe in the same location. Like this.
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DAA even makes a machine to do it. Drop a round into the shoot and it pops out marked on the other side.
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