玩百家技巧简介：Today's lead bullets are all cast in sand molds. Lead water is poured into a mold made of sand. Since the mold itself is not smooth, the cast lead bullets are not very regular. If you want to become smooth, you must find other ways.
Today's lead bullets are all cast in sand molds. Lead water is poured into a mold made of sand. Since the mold itself is not smooth, the cast lead bullets are not very regular. If you want to become smooth, you must find other ways.
