You would think the melting process would burn it off or separate it so it can be removed.I've read it's all but impossible to "clean" battery lead to the point that it is viable for bullet use.
Something about not being able to eradicate the sulfuric acid.
How does the acid stay in melted lead?
I've never tried to make my own bullets. I've thought about it, but at this point I can't find any sources that would make it worth doing it. So I'm just trying to learn from the forums and other people's knowledge.