Underwood Ammo 50 Beowulf 420 Grain Solid Monolithic Brass Cased Rifle Ammo 20 Rounds. Specifications for Underwood Ammo 50 Beowulf 420 Grain Solid Monolithic Brass Cased Rifle Ammunition: Manufacturer: Underwood Ammo Caliber: .50 Beowulf Number of Rounds: 20 Bullet Type: Monolithic Bullet Weight: 420 grain Cartridge Case Material: Brass Muzzle Velocity: 1650 ft/s Muzzle Energy: 2539 ft-lbs Application: Hunting Package Type: Box Primer Style: Centerfire Lead Free: Yes Dimensions: 2.55 X 3.25 X 5.00 in Width: 3.25 in Package Contents: Underwood Ammo 50 Beowulf 420 Grain Solid Monolithic Brass Cased Rifle Ammo What is Underwood Ammo 50 Beowulf 420 Grain Solid Monolithic Brass Cased Rifle Ammunition good for? The manufacturer says that it is good for hunting.Underwood Ammo 556: 50 Beowulf 420 Grain Solid Monolithic Brass Cased Rifle Ammo 20 Rounds