When I graduated from college, I worked for 9 years as an analytical chemist and a laboratory supervisor. As only a part of my work as a chemist, I did Environmental Compliance Monitoring, I conducted NDPDS studies for our clients, I analyzed mining samples, and I've done many heavy metal studies. Lead is a heavy metal that repeatedly came up on my radar as a chemist.
Becuase of my access to the equipment and my personal curiosity....I collected air samples of the fumes coming off my lead pot, then I analysed the samples for lead content using a GCMS. There's lead in there folks.
When I digested samples to extract metals for analysis, I would digest those samples in a solution of Aquaresia, which is a mixture of Nitric Acid and Hydrocholoric Acid...this is a great solution for dissolving any metal. The human stomach contains low concentrations of Hydrocholoric Acid...its not enough to dissolve an entire bullet...but it will clean it off pretty good and what is removed goes strait into your blood and plates out on your bones.
The scary part is Biological Amplification. Heavy metals that make it into the blood stream stay there...they don't pass out of the body, they don't leave, ever. There is a thresh-hold level at which a person will exhibit the simptoms of lead poisoning, and each exposure to lead accumulates the amount of lead in the body.
You need to reduce your exposure so that you don't ever reach the thresh-hold levels in your lifetime. not eating or drinking while working with lead will reduce your exposure. Washing your hands thoroughly after working with lead will reduce your exposure. Bullet casting in a well ventilated location will reduce your exposure...casting bullets in an enclosed location will increase your exposure. Eating lead will definately increase your exposure. But don't fool yourself...everytime that you cast bullets you are exposing yourself to lead....you need to reduce the amount of exposure as much as possible.
If I have offended anybody, I am sorry. That was not my intent. But I like you guys and I enjoy coming here and reading your posts and sharing what I'm doing in the realm of shooting with all of you. So with that....Everybody have a nice day.