Underwood Ammo .458 HAM'R 302 Grain Solid Monolithic Brass Cased Rifle Ammo 20 Rounds. Specifications for Underwood Ammo .458 HAM'R 302 Grain Solid Monolithic Brass Cased Rifle Ammunition: Manufacturer: Underwood Ammo Caliber: .458 HAM'R Number of Rounds: 20 Bullet Type: Monolithic Bullet Weight: 302 grain Cartridge Case Material: Brass Muzzle Velocity: 2100 ft/s Muzzle Energy: 2958 ft-lbs Application: Hunting Package Type: Box Primer Style: Centerfire G1 Ballistic Coefficient: 0.211 Lead Free: Yes Projectile Caliber: .458 Caliber Dimensions: 2.40 X 3.25 X 4.95 in Width: 3.25 in Package Contents: Underwood Ammo .458 HAM'R 302 Grain Solid Monolithic Brass Cased Rifle Ammo What is Underwood Ammo .458 HAM'R 302 Grain Solid Monolithic Brass Cased Rifle Ammunition good for? The manufacturer thinks that it is suitable for hunting.Underwood Ammo 463: .458 HAM'R 302 Grain Solid Monolithic Brass Cased Rifle Ammo 20 Rounds