This has been kicked around for years.

We all need to get together on this one.

Sweden moved to ban lead bullets, and apparently a variety of research was used to defeat the measure. I may be able to locate some of that data.

IIRC, one of the studies apparently involved a battlefield where some bullets were known to have been fired circa 1600's. Thus they had lots of time to oxidise. Tests in surrounding soil indicated very little or no migration of lead. SOME acidic soils have been linked to lead oxidation and migration but I would love to hear from some of our technically-aware folks here who might have some specialty in this area.

I read quite a while ago that the BS-politics of lead in CA involved the fear of ingestion by endangered condors eating gutpiles from hunted game animals. This seems so absurd that it could only be an April Fools joke.

Anyway, COPPER is as toxic, or more so, and represents another place for the antigunners to address the issue in environmental terms. Also, I have read of monolithic bullets being linked to logging equipment damage and hazards to loggers.