The RCBS Round Nose Pistol Bullet Mould - Double Cavity is just one of the many reloading products manufactured by this company. This mould is machined using solid cast iron blocks, and because they meet exact expectations, there is complete accuracy and clean repeated castings. In addition, the blocks are precision ground square, and to ensure ideal mating of mould blocks, even following years of heavy use, steel alignment pins are used. This mould, as well as other moulds from this company, boasts a 3/16-inch sprue plate, tightened with spring washers and screws made from tempered steel.