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Lapua 338 Magnum 250gr Lock Base FMJBT Ammo – 10 Rounds

UPC: 6418267101752

$80.99

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Description

When you're serious about extreme long-range shooting, the ammunition has to match your commitment. This Lapua factory load pairs their renowned Finnish engineering with a 250-grain Lock Base projectile designed to shoot like a laser across vast distances. Each round leaves the muzzle at 2952 feet per second carrying nearly 4,840 foot-pounds of energy, and maintains supersonic flight past 1300 meters for competitors and hunters pushing their effective range to the limit.

Lapua Lock Base Technology Behind the Accuracy

The Lock Base design is Lapua's proprietary answer to extreme-distance ballistics. This patented base combines a full metal jacket with a boat tail profile, but adds a specialized locking mechanism that prevents base deformation under the intense pressures and stresses of long-range flight. The result is consistency shot after shot, group after group. The FMJBT configuration itself reduces drag for a flatter trajectory, which translates directly to smaller elevation adjustments and more forgiving wind calls at distance.

Built to Lapua Standards, Shot to Distance

Lapua's reputation for match-grade ammunition wasn't built on marketing. Every component gets personally inspected during production, from the Finnish brass cases to the precisely manufactured projectiles. These rounds come in a box of 10, giving you quality over quantity. The 250-grain weight is purpose-built for the 338 Lapua Magnum platform with ballistic coefficients that keep your rounds supersonic where other loads begin to subsonic fade. Whether you're running ELR competitions or stretching out to hunt prime territory, the external ballistics stability of this round makes wind reading more predictable and impacts more precise.

Key Specifications

  • Caliber: .338 Lapua Magnum
  • Bullet Weight: 250 grains
  • Bullet Type: Full Metal Jacket Boat Tail (FMJBT)
  • Muzzle Velocity: 2952 ft/s
  • Muzzle Energy: 4840 ft-lbs
  • Cartridge Case: Brass
  • Primer: Centerfire
  • Round Count: 10 rounds
  • G1 Ballistic Coefficient: 0.625
  • G7 Ballistic Coefficient: 0.31
  • Supersonic Range: 1300+ meters
  • Manufacturer: Lapua
  • Manufacturer Part Number: 4318033
  • UPC: 6418267101752
  • Country of Origin: Finland

What’s Included

  • 10 rounds of factory-loaded ammunition

Frequently Asked Questions

What makes the Lapua Lock Base FMJBT different from standard boat tail bullets?

The Lock Base design features a patented base mechanism that prevents deformation under high pressure and the stresses of extreme-range flight. This maintains ballistic consistency that standard boat tail designs can't match, especially important when shooting beyond 1000 yards where bullet stability directly affects impact accuracy.

What range is this 338 Lapua ammo designed for?

This round is engineered for extreme long-range applications. The 250-grain projectile remains supersonic past 1300 meters and delivers consistent external ballistics at competition distances well beyond 1500 meters. It's also suitable for long-range hunting where precision at distance is critical.

Can I reload these cartridges after firing?

Yes. Lapua brass cases are known for quality and longevity, making them popular with handloaders. The cases can be inspected, cleaned, and reloaded following standard 338 Lapua Magnum reloading practices and load data.

How does the ballistic coefficient affect my shooting?

The G7 ballistic coefficient of 0.31 means this projectile resists wind drift and bullet drop effectively, resulting in flatter trajectories and more forgiving shooting at extreme distance. Higher BC bullets require fewer wind hold-offs and elevation adjustments, which improves your first-round hit probability at distance.

Additional information

UPC

6418267101752

Manufacturer

Manufacturer Part Number

4318033

Shipping Weight

1.0

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