If you're worried about a little lead or gun solvent causing cancer, then consider the millions of folks who handle highly toxic chemicals on a daily basis that don't give it a second thought. Most of them don't even wash their hands before they eat
For years I worked in the printing industry where splashing all kinds of solvents on everything, without any kind of protection, was common... and I'm still here.
This so reminds me of those debates where people claimed that they were alive because they didn’t wear their safety belt. Never met a dead man who said he might be alive if he wore one. There were a lot more dead ones than live ones.
Guys keep away from those chemicals. My Dear old Dad worked in photographic labs all his life. Took me to work a couple of times. I remember the smell of those 20 or 30 foot long, open, unvented chemical troughs where they used to develop camera film. Stay too long, you would get a buzz. Must have been benzene, toluene, who knows what in those chemical baths. Now Dear old Dad retired with a little skin cancer, but as the years went on, he was all ate up with cancers. I know he had leukemia. Lots more skin cancer, kidneys failed, diabetes, lots of stuff. At his service his Doctor said that all major organs of his body had failed. His brother, sister, never had those problems, and they never worked around chemicals. You soak all day in that stuff, it kills you. One guy I worked with, lived near a Leather factory. Nasty chemicals. Every guy he knew who worked at that factory died from cancers at an early age.
Those guys claiming they are immune, maybe they are the lucky ones. There are a lot more dead ones who ain’t talking.
Wear your Nitrile gloves, clean your hands, shoot in good ventilation. Easy stuff. Not hard to follow.