Underwood Ammo .338 Lapua Magnum 300gr HPBT Rifle Ammunition – 10 Rounds

Push long-range performance to its limits with Underwood Ammo’s .338 Lapua Magnum 300gr HPBT (Hollow Point Boat Tail) rifle ammunition. Engineered for precision shooters, big-game hunters, and serious marksmen, this load delivers exceptional downrange accuracy and terminal performance from one of the most capable long-range cartridges available today.

**Ballistics & Performance**
This round launches a 300-grain HPBT projectile at 2,700 feet per second, generating a massive 4,857 ft-lbs of muzzle energy. With a high ballistic coefficient (G1) of 0.800 and a sectional density of 0.375, this bullet resists wind drift and retains velocity and energy at extended distances — making it an outstanding choice for long-range hunting and precision shooting applications. The supersonic flight profile ensures consistent, stable trajectories well beyond typical engagement ranges.

**Construction & Quality**
– **Bullet:** 300gr Copper-Lead HPBT
– **Caliber:** .338 Lapua Magnum (0.338″ diameter)
– **Muzzle Velocity:** 2,700 fps
– **Muzzle Energy:** 4,857 ft-lbs
– **Ballistic Coefficient (G1):** 0.800
– **Sectional Density:** 0.375
– **Casing:** New production reloadable brass
– **Primer:** Boxer-primed, non-corrosive
– **Round Count:** 10 rounds per box
– **Suppressor Safe:** Yes

**Why Underwood Ammo?**
Underwood Ammo has earned a strong reputation among hunters, precision shooters, and self-defense professionals for loading ammunition to maximum performance standards. Every round is manufactured with tight quality controls to deliver consistent velocity, reliable ignition, and repeatable accuracy — box after box.

Available now at VanTon Arms with competitive pricing and fast nationwide shipping. Order online today and experience the Underwood difference.