I cannot imagine how our hunting ancestors ever survived after eating all that game shot with lead and jacketed lead bullets

You can preach away all you like, but lead in the meat is such a miniscule issue that most can safely ignore it altogether.
The fact is, lead
vapors are immensely more toxic than any particles of metallic lead in the meat.
If one happens to ingest a small particle of lead into his stomach, it is highly unlikely that a measurable amount would be digested.
Most will pass out, undigested, just like other wastes.
Only in a bird's digestive tract does the lead get ground up and absorbed.
And don't bother referring me to the websites with the reports on lead in meat from bullets.
I have read many, and am thoroughly unconvinced of a real danger.
Even the "experts" cannot agree as to whether there is reason for alarm or not.
Mental retardation? Not a chance it would be from the lead that ends up in the meat we eat that was shot with lead containing bullets.
FWIW, I do use monometal bullets in certain applications since they shoot so well in those particular rifles.
I really care less what a bullet costs, since it is a small part of the hunt anyway.
Regards, Eagleye.