We have a number of police agencies renting our bays. Not only do they leave their brass (hey, my taxes paid for it) but, of course, their bullets are now in our berms.
Lots of jacketed, of course, but some are frangibles, made of some compressed reddish brown powder that often does not fragment in our sand faced berms. The weight is close to lead, but just light enough that I can tell the difference, most of the time.
What are these things made of? Anybody know if this will cause problems with alloy reclaimed from berms shot up with these types of slugs? (I don't relish the thought having to hand sort the scrap I recover.)