Metallic lead being ingested by humans is a non-issue. I've been eating lead-shot game all my life, I'm sure that I swallowed 1/2 a can of air rifle pellets in my youth (one at a time, of course), my house's copper supply plumbing is soldered with 50/50 solder (I did it myself) and I smelt lead and cast lead bullets.I think we are getting this finally.
Link to this video is below.
I think that it is irresponsible to recommend bullets containing lead for hunting if you hunting for meat.
I was hunting with bullets containing lead most of my life now I know better....
100 micrograms per decilitre of blood, in adults, and 40 micrograms per decilitre of blood in children, is cause for concern. With all my lifetime lead exposure, my level is 5 micrograms per decilitre of blood, yup... 5, not 50, not even 15... 5 .
(of course it should be pointed-out that the ideal lead level in your blood is
0.0 no one has that level in Canada; but it is the ideal)
Of course if you want to shoot lead-free bullets, there's nothing wrong with it. You're reducing the cost, perhaps soon they'll be cheap enough that I'll consider using them.