[wahern]

It's not mentioned in those two sources, but almost all firearm propellant primers contain lead as an additive. And to make matters worse, it's these exhaust gases that end up all over your hands and face.

I didn't know this until I took my kids to a shooting range in Reno. Before going I had read warnings to make sure to wash their hands afterward, but it was nuts how much residue ended up on our hands after shooting only a single box of rounds; and given the feel of it, likely heavily laced with lead or other metals. I don't think I'd ever take my kids to a gun range again unless I brought my own gun (with well-maintained parts) and used lead-free ammunition--most importantly lead-free primers.

AFAIU it's much easier to find non-leaded bullets than non-leaded primers, though neither is very popular. Until very recently all the discourse on lead exposure and contamination seems to have been focused on the bullet itself.

[germinalphrase]

“ Until very recently all the discourse on lead exposure and contamination seems to have been focused on the bullet itself.”

Not without reason. Animals hunted with lead bullets often leave lead fragments in the natural environment via gut piles (if recovered) or the carcass itself (if not recovered).

Lead poisoning is one of the leading causes for death for carrion birds (who eat the carcasses/gut piles) - such as the California Condor. Because of this, wildlife preservation groups - like the Peregrine Fund - have been vocal proponents of eliminating lead bullets.