A patented process forms the hollow point cavity in two stages. The core is prefluted to define the fault lines of expansion, controlling final diameter and retained weight. The second process finishes the cavity and controls the rate of expansion. Select, clean burning propellants deliver optimum velocity while ensuring consistent chamber pressures. Non corrosive CCI primers are used for highly sensitive and reliable performance, as well as nickel plated brass cases for smooth feeding and durability. These technical features allow Speers engineers to fine tune each specific caliber and bullet weight for maximum field performance. Buy Cheap, Bulk CCI/Speer 357 Magnum ammo at Short Round Supply Co. We give you the best deals and fast, flat rate shipping on CCI/Speer 357 Magnum ammunition all day, every day!