Mercury is no longer used in primers. They will use the mercury for squiggly light bulbs to break and spew mercury in the nursery. New tire weights are using zinc.
“Mercury is no longer used in primers.”
True, but if you had to make your own, mercury fulminate is easier to make than alternatives.
Zinc makes a great bullet! Hard, self lubricating, and consistent. Not sure how easy to cast, but never wanted to get into rolling my own slugs......may have to rethink that one.