Other Details Manufacturer: Weatherby Manufacturer Part Number: F257100SCO Boxes Per Case: 10 Bullet Type: POLYMER TIPPED Caliber/Gauge: .257 Weatherby Magnum Case Material: Brass Dimension: 1.55 X 3.45 X 6.05 Grains: 100 gr Muzzle Energy: 2838 ft lbs Muzzle Velocity (fps): 3575 fps Reloadable: Yes Units per Box: 20 Cost per Round: 4.73