RCBS takes bullet casting seriously and their Bullet Moulds are designed with precision to ensure superior performance. Machined from solid cast iron blocks to exacting tolerances, these moulds guarantee accurate, clean and repeatable castings every time. The blocks are precision ground square before machining, with steel alignment pins ensuring perfect mating of mould halves, even after years of heavy use. Each mould comes with a 3/16 inches thick solid steel sprue plate, securely attached with tempered steel spring washers and screws for long-lasting durability. Available in a variety of sizes and configurations, RCBS Bullet Moulds are suited for a wide range of calibers and bullet shapes, perfect for anything from plinking at the range to precision hunting or target shooting. These moulds are engineered to help you achieve consistent and reliable results.