Outdoor Master cartridges utilize innovative components and production processes that deliver an economical cartridge suitable for all purposes. Topped with Sierras proven line of Sports Master Jacketed Hollow Point (JHP) bullets, the Power Jacket provides positive, uniform and controlled expansion by means of specially placed skives in the jacket around the tip of the bullet. Outdoor Master cartridges are loaded with brass casings, making reloading with conventional equipment easy and economical. Packed with hard-hitting terminal performance and the same attention to detail that Sierra is famous for, Outdoor Master will get you outside with confidence. Specifications: 357 Mag 158 gr Jacket Hollow Point Sport Master 20 Per Box