Underwood Ammo Rifle Ammunition 338 Lapua Mag 300Gr Hpbt 2700 Fps 10/Ct

The Underwood Ammo .338 Lapua Magnum 300-grain HPBT rifle ammunition delivers the ballistic performance serious long-range hunters and precision shooters demand. Loaded to 2700 feet per second with 4857 foot-pounds of muzzle energy, this round combines a high ballistic coefficient (G1: 0.8) with substantial sectional density (0.375) for deep penetration and consistent performance on large game at extended distances. Each box contains 10 rounds of new production ammunition in reloadable brass cases, making it an economical choice for handloaders who want to fine-tune their .338 Lapua loads.

Built on non-corrosive boxer-primed brass and designed to run cleanly and reliably, Underwood's .338 Lapua load is equally at home on the range, in the field, or behind a suppressor—yes, this round is rated safe for suppressed rifles. The 300-grain hollow-point boat-tail bullet splits the difference between velocity and mass, giving you the aerodynamic stability of a sleek design without sacrificing the downrange energy that makes the .338 Lapua such a formidable elk and moose round.

If you're running a .338 Lapua for serious hunting, competition shooting, or long-range precision work, Underwood delivers the consistency and performance you expect without the price tag of premium boutique loads. The reloadable brass means you get more life out of each box, and the specs—velocity, energy, and ballistic coefficient—give you the data you need to dial in your system and trust your shot.

Key Features

• 300-grain HPBT bullet engineered for deep penetration and consistent expansion
• 2700 fps muzzle velocity with 4857 ft-lbs of energy
• High ballistic coefficient (G1: 0.8) for stable flight and reduced wind drift
• Strong sectional density (0.375) for reliable large-game performance
• New production, non-corrosive ammunition with reloadable brass cases
• Boxer-primed for easy reloading
• Rated safe for use in suppressed rifles
• 10 rounds per box

Specifications

Frequently Asked Questions

Is this .338 Lapua ammunition safe to use in a suppressed rifle?

Yes. Underwood rates this round as safe for use with suppressors, so you can run it behind a can without concern.

Are the brass cases reloadable?

Yes. The cases are new production brass, boxer-primed, and designed to be reloaded, so you can stretch your investment across multiple shooting sessions.

What is this ammunition designed for?

The 300-grain HPBT load is a proven hunting round, particularly effective on large game at long range. It's also suitable for precision target shooting and competition where the .338 Lapua is used.

How many rounds are in a box?

Each box contains 10 loaded rounds.