I met a gunsmith who had severe lead poisoning that he said was from cleaning customer's guns with solvents without wearing protective gloves. His symptoms were very severe, long lasting and debilitating.
Another person who ran indoor plate shoots at a commercial range had a blood lead level that exceeded the definition of poisoning. The range was recycling range air without changing the filters on a regular basis, and the water system for the backstop wasn't in operation and he spent a lot time in the range every week.
I met another younger man in his 20's with lead poisoning caused by practicing small bore rifle in his basement where he was shooting a lot beginning as a young teen. There was a home made backstop indoors consisting of a simple steel plate without any ventilation and the poisoning happened over time and he said that it caused sterility issues that should be reversible, but takes time.
Plumbers disease is supposedly caused by lead vapors from soldering it with a torch, and I suppose that bullet casters can possibly be exposed to lead vapors from high heat too.
And there's concern about the lead contained in vapors from fired cartridge primers being inhaled in indoor shooting ranges which being poisoned by is known to occur.
I once had a blood lead level taken and all positive results are required by law to be reported to the state health dept.. At the time the lady doctor said that she shoots indoors too.
Now what about the lead that the condors are eating? Are their bodies absorbing lead because they eat rocks which grinds up the lead in their digestive tract? We all know children can get lead poisoning from eating paint chips, and also some of the paint and vinyl on Chinese toys, crayons etc that contain "lead"...