Hello again. I just bought a 5 gal. pal of already formed COWW ingots for a very good price. Then I hear from another guy to "be careful, he doesn't zinc sort his lead" ! ! ! Apparently this other fella has bought lead from him in the past and it wasn't all to great. How do I tell if my ingots are alloyed with zinc? Will the muriatic acid drip test work even after they've be mixed/alloyed with the COWW and poured into ingots? Can I check with a BHN hardness tester and what will it read? Any helpful suggestions would be greatly appreciated. Thank you.