Swift Bullet Company Ammo .375 H&H 300 gr A-Frame 2503 fps 20/ct SB. The bullet initiates expansion at 1650 feet per second on the low end and stays together at 3000+ feet per second on the high end. Controlled expansion of 2.2x its original caliber and 95percent+ weight retention make the A-Frame bullet superior in downrange energy and stopping power. Terminal performance is unequaled.. Specifications for Swift Bullet Company Ammo .375 H&H 300 gr A-Frame 2503 fps: Manufacturer: Swift Bullet Company Caliber: .375 H&H Magnum Number of Rounds: 20 Bullet Type: Jacketed Soft Point (JSP) Bullet Weight: 300 grain Cartridge Case Material: Brass Muzzle Velocity: 2503 ft/s Muzzle Energy: 4176 ft-lbs Application: Big Game Hunting Dangerous Game Package Type: Box Included Accessories: None Primer Style: Centerfire Package Contents: Swift Bullet Company Ammo .375 H&H 300 gr A-Frame 2503 fps Swift Bullet Company SB10012: Ammo .375 H&H 300 gr A-Frame 2503 fps 20/ct