Other Details Manufacturer: Weatherby Manufacturer Part Number: H303220ELDX Application: Hunting Boxes Per Case: 10 Bullet Type: Hornady ELD-X Caliber/Gauge: .30-378 Weatherby Magnum Case Material: Brass Grains: 220 gr Muzzle Energy: 4544 ft lbs Muzzle Velocity (fps): 3050 fps Units per Box: 20 Cost per Round: 6.68