the only 2 ways to get lead into your system are ingestion and injection unless you can heat it to over 1100* or make fine particles of it float in the air.I worked in a lead processing plant in their electro ceramic division and was a commercial caster at the same time and had my lead levels checked every month.
my levels were as low as and lower than most of the guys who had more than 5 years less time in than i did.
something to watch out for yes,take precautions against yes,freak out about no.
if it were ,about every shooter that ever shot full metal jacketed stuff [it has exposed lead at the base] or bpcr shooters or old buffalo hunters or old time cowboys or bullseye shooters. would be dead from lead poisining.