Winchester SPR X .450BM 260 Grain PP Brass Case Centerfire Rifle Ammo 20RD. 450BM 260 Grain PP Brass Case Centerfire Rifle Ammunition online at OpticsPlanet. This Winchester Ammunition features Soft Point (SP) bullets that deliver powerful stopping power superior accuracy and reliability. With premium brass cases loaded with soft point (sp) bullets. With great promotions on Ammunition and other top-tier rifle ammo from trusted brands like Winchester you re sure to find the perfect firepower for your next hunting trip or range visit. Stock up today to save big on ammo and other top-tier tactical hunting and outdoor gear at OpticsPlanet. Specifications for Winchester SPR X .450BM 260 Grain PP Brass Case Centerfire Rifle Ammunition: Manufacturer: Winchester Caliber: .45 Black Powder Magnum Number of Rounds: 10 Bullet Type: Soft Point (SP) Bullet Weight: 260 grain Cartridge Case Material: Brass Muzzle Velocity: 2110 ft/s Muzzle Energy: 2570 ft-lbs Package Type: Box Included Accessories: None Primer Style: Centerfire Package Contents: Winchester SPR X .450BM 260 Grain PP Brass Case Centerfire Rifle Ammunition Winchester WINCX4501: SPR X .450BM 260 Grain PP Brass Case Centerfire Rifle Ammo 20RD