Liberty Ammunition OverWatch .223 Remington 55 grain Hollow Point Brass Cased Rifle Ammo 20 Rounds. After testing Civil Defense these groups were impressed by the way the projectile erupts upon impact. The only concern was the lack of penetration. Liberty Ammunition addressed this issue OVERWATCH projectiles are designed to function similarly to Civil Defense projectiles but offer increased weight for deeper penetration. Capable of penetrating 12in-16in in gel blocks the Overwatch lineup prioritizes Maximum Organ Displacement or MOD. As always Overwatch ammunition projectiles are crafted from solid copper alloy Specifications for Liberty Ammunition OverWatch .223 Remington 55 grain Hollow Point (HP) Brass Cased Rifle Ammunition: Manufacturer: Liberty Ammunition Caliber: .223 Remington Number of Rounds: 20 Bullet Type: Hollow Point (HP) Bullet Weight: 55 grain Cartridge Case Material: Brass Muzzle Velocity: 3000 ft/s Application: Hunting Included Accessories: None Primer Style: Centerfire Lead Free: Yes Package Contents: Liberty Ammunition OverWatch 223 Rem 55 Grain Hollow point Brass casing - Black Nickel Casing Cased Rifle Ammunition What is Liberty Ammunition OverWatch .223 Remington 55 grain Hollow Point (HP) Brass Cased Rifle Ammunition good for? The manufacturer suggests that it is best for hunting.Liberty Ammunition LA-OW223-55-3000: OverWatch 223 Rem 55 Grain Hollow point Brass Cased Rifle Ammo 20 Rounds