https://www.nwhc.usgs.gov/publications/fact_sheets/pdfs/lead_poisoning_wild_birds_2009.pdf
http://www.outdoorlife.com/articles/hunting/whitetail-deer/accessories-gear/2008/12/update-lead-your-meat
https://www.nwhc.usgs.gov/publications/documents/92JCF.CLE01.pdf
I. Just.Do. NOT Believe. IT. Sorry, end of discussion.