Palladium (Pd) sells for $650 per ounce, so apparently my 55 pounds of reclaimed shot are worth $500,000. :D :D :D Seriously, whatever this reclaimed shot is, it's good stuff. It casts well and heat treats to BHN 40. That's right, 40, and I have confidence in that measurement, unlike the assay. :D
I sent off a sample to be assayed, because I wanted to be able to duplicate this alloy on command. Obviously reclaimed shot is not a controlled alloy so the next time I buy reclaimed shot it may be different than this batch. But I guess the recipe will remain a secret. :(
The seller, Rotometals, said it typically runs 3% - 4% antimony on their XRF. Their XRF does not measure arsenic, so they couldn't say about the arsenic content.
I knew going into this that XRF's were fallible. I just didn't realize how fallible. :D :D :D
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