Except for the cannon folk, it seems a pretty common sentiment here that zinc is not wanted as a boolit casting metal. However there is pending legislation on the Left Coast that might ban lead bullets at ranges (still would be legal to own such ammo, but who knows what lies ahead). In the interest of preparing for the worst case (sorta like for COVID19) I'm investigating alternatives that will keep me shooting in volume (handgun action pistol). Zinc might be an option, especially if I can cast and coat my own.
I've searched the forum and one issue raised is the mold material. Zinc apparently is very hard on steel, iron and aluminum molds; it attacks them chemically and erodes the cavities. Does anybody know what zinc will do to brass molds?
The most common zinc alloy is Zamac, which is mainly zinc with a little aluminum. It's commonly used to make die cast parts. Anybody here with experience in the industry who might comment on its use in bullet casting?