I'm less concerned with the immediate exposure while handling the media, it is more about the contaminated dust getting on me, then getting it inside, in the kitchen, on the dishes, etc., and then ingesting it over the long term.

For example, I load lead bullets and have no concerns about handling them. I know that lead has to be ingested to be harmful, handling lead bullets is no danger.

The lead styphnate from the primers gets in the dust, then the air, and can be ingested. I've been doing this for 10 years with no ill effects, but I am tired of the mess and am looking for a better method. If it helps alleviate potential health risks, all the better.

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Common sense isn't so common.