HSM Ammunition Pro Pistol .500 S&W Magnum 400 Grain Jacketed Soft Point Brass Cased Pistol Ammo 20 Rounds. The Pistol Pro ammo features premium jacketed Sierra bullets which is ideal for reliability and accuracy you can trust. Specifications for HSM Ammunition Pro Pistol .500 S&W Magnum 400 Grain Jacketed Soft Point Brass Cased Pistol Ammunition: Manufacturer: HSM Ammunition Caliber: .500 S&W Magnum Number of Rounds: 20 Bullet Type: Jacketed Soft Point (JSP) Bullet Weight: 400 grain Cartridge Case Material: Brass Primer Style: Centerfire HSM Ammunition 500SW9N: Pro Pistol .500 S&W Magnum 400 grain Jacketed Soft Point Brass Cased Pistol Ammo