Other Details Manufacturer: Weatherby Manufacturer Part Number: H303180IL Application: Hunting Boxes Per Case: 10 Bullet Type: Hornady Interlock Caliber/Gauge: .30-378 Weatherby Magnum Case Material: Brass Grains: 180 gr Muzzle Energy: 4419 ft lbs Muzzle Velocity (fps): 3325 fps Units per Box: 20 Cost per Round: 4.73