Underwood Ammo XTP Features The Underwood Ammo XTP pairs Hornady s eXtreme Terminal Performance bullet design with Underwood s own powder and casing engineering to produce a round built for deep controlled penetration. The 180 grain jacketed hollow point in .44 Mag carries a sectional density of 0.14 and a ballistic coefficient of 0.138 numbers that translate into a stable flight path and reliable expansion once the bullet meets its target. Traveling at 1700 fps and producing 1155 ft lbs of energy at the muzzle this load is rated supersonic and classified for medium to large game applications. The combination of bullet design and velocity gives hunters and defensive shooters a round that performs consistently across real-world conditions. Nickel plated brass casings bring several practical advantages to this load including smoother feeding across different firearm actions and stronger resistance to corrosion than traditional brass offers. The nickel plating also resists tarnishing from moisture leather and other metals during storage keeping ammunition ready when it is needed. Flash suppressed powder keeps muzzle flash to a minimum protecting the shooter s night vision during low light encounters. Each box ships with 20 rounds and this load is rated safe for use in a suppressed firearm rounding out a package built for hunters and self-defense minded shooters alike. Underwood Ammo XTP Specifications Manufacturer: Underwood Ammo Model: XTP Caliber: .44 Mag Bullet Weight: 180 gr Bullet Type: Jacketed Hollow Point Rounds Per Box: 20 Casing Material: Nickel-Plated Brass Muzzle Velocity: 1700 fps Muzzle Energy: 1155 ft lbs Sectional Density: 0.14 Ballistic Coefficient: 0.138 Application: Medium-Large Game Available At: GrabAGun