The ALCO .338 Airgun Slug 175-Grain ULD Steel Tip Flat Base is a proprietary, airgun-engineered design developed specifically for custom .338 caliber PCP air rifles. Its extended Ultra-Low Drag (ULD) profile, precision CNC-machined steel tip, and flat base maximize ballistic efficiency, stability, and retained energy for exceptional long-range accuracy. Designed for single-feed rifles, these American-made .338 airgun slugs are ideal for serious competitors, hunters, and shooters seeking premium big bore airgun projectiles. Custom weights are available upon request.

⚠ Verify your exact bore diameter before ordering.

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Precision .338 Airgun Slugs for Custom Big Bore PCP Air Rifles

Before reviewing the specifications below, it's worth understanding what sets this projectile apart. The ALCO .338 Airgun Slug was engineered specifically for custom .338 caliber PCP air rifles, combining a precision CNC-machined steel tip, Ultra-Low Drag (ULD) profile, and flat base to deliver exceptional long-range accuracy, retained energy, and dependable field performance. Every slug is precision swaged in the USA and individually inspected to ensure the consistency serious hunters and competitive shooters expect from a premium big bore airgun projectile.

Technical Specifications

Caliber: .338

Weight: 175 Grains

Design: Ultra-Low Drag (ULD)

Tip: Precision CNC-Machined Steel Tip

Base: Flat Base

Core: 100% Precision Swaged Lead

Overall Length: 1.20"

Ballistic Coefficient (G1): 0.506

Packaged: 50 Per Box

Manufactured: USA

Velocity Basis: 900 fps

Application: Single-Feed PCP Air Rifles

Custom Weights Available Upon Request

Developed for a Unique Class of Air Rifles

The ALCO .338 Airgun Slug was created for a specialized group of shooters—owners of custom .338 caliber PCP air rifles who need a projectile capable of matching the performance of these exceptional rifles.

Unlike more common big bore airgun calibers, .338 PCP air rifles are generally custom-built or produced in limited numbers. As a result, high-quality projectile options have been difficult to find. ALCO has been manufacturing custom .338 airgun slugs for discerning customers for years and now offers this proprietary design to make premium .338 projectiles more readily available.

If your rifle performs best with a different projectile weight, we're happy to help. Custom weights can often be produced to match your individual rifle and shooting requirements.

Engineered Specifically for PCP Airgun Performance

This is not a firearm bullet adapted for airgun use.

The ALCO .338 was engineered from the ground up as a purpose-built airgun slug for modern PCP air rifles. Its proprietary Ultra-Low Drag (ULD) profile and precision CNC-machined steel tip were developed to maximize performance at subsonic airgun velocities where efficient aerodynamics become especially important.

The long, streamlined design reduces drag while increasing ballistic efficiency, allowing the slug to retain velocity, stability, and energy farther downrange than conventional projectile designs.

The result is outstanding long-range consistency for both competitive shooting and hunting applications.

Ultra-Low Drag Design That Delivers

The ALCO ULD design is the foundation of this projectile's performance.

Benefits include:

• Excellent ballistic coefficient
• Reduced aerodynamic drag
• Improved wind resistance
• Exceptional retained energy
• Stable long-range flight
• Match-grade accuracy
• Dependable terminal performance

Rather than simply chasing ballistic coefficient numbers, ALCO focuses on efficient projectile design. A well-designed slug retains energy more effectively, flies more consistently, and delivers predictable performance when every shot matters.

Built for Single-Feed Precision

Because of its extended ULD profile, the ALCO .338 is intended for single-feed PCP air rifles.

The flat base promotes consistent bore engagement while the precision-machined steel tip helps maintain the projectile's aerodynamic shape throughout flight. Together they produce outstanding consistency from shot to shot.

Whether you're ringing steel at extended distances or pursuing game in the field, this slug was engineered to provide the confidence serious shooters demand.

American-Made Craftsmanship

Every ALCO projectile begins with precision manufacturing—not mass production.

Each .338 airgun slug is:

• Precision swaged from 100% soft lead
• Fitted with a custom CNC-machined steel tip
• Individually inspected
• Manufactured in the USA
• Accuracy tested before release

Maintaining tight tolerances in weight, diameter, concentricity, and overall consistency allows every production lot to deliver repeatable performance you can trust.

Custom Projectiles for Custom Rifles

One advantage of working with ALCO is flexibility.

Because many .338 PCP air rifles are custom-built, shooters often need projectiles tailored to their specific rifle. We regularly manufacture custom weights and can often produce alternate configurations to help optimize performance for your application.

If you don't see exactly what you're looking for, give us a call. We'd be happy to discuss your rifle and recommend the best solution.

Built to Compete. Proven to Hunt.

Whether you're searching for .338 airgun slugs, airgun bullets, big bore pellets, or precision hunting projectiles, ALCO builds premium American-made projectiles for shooters who demand uncompromising accuracy and dependable field performance.

Questions about bore size, projectile selection, or compatibility with your PCP air rifle? Give us a call—we answer our own phones and are always happy to help you choose the right slug for your rifle.