The first two results you will likely bring up are from Scientific America and The American Journal of Medicine.
From the responses there seem to be plenty of members who are blasé and/or ill-informed when it comes to both the dangers of elevated body lead levels and the distribution of lead particles around a wound caused by a frangible bullet. That's fine, no real concern of mine, though I do think it is irresponsible to advise new members to follow your practices.
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