Googled "solid copper bullets" and learned me some stuffs. First - copper bullets aren't nearly as Coolio as I had thought, though the entire concept is still pretty new and the technology is still very much in the development phase: https://www.ballisticstudies.com/Kno...+inhumane.html

Second: most solid copper bullets are machined, not cast. Duh. Should have seen that coming.

Still - since my question was mostly theoretical anyway - still interested in any ideas or experience with casting copper bullets.

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