Introduction
Discover the Lehigh Defense Tipped Maximum Expansion, a lead-free bullet engineered for hunters who demand maximum terminal performance and environmental responsibility. Introduced by Lehigh Defense in 2023, based in Quakertown, Pennsylvania, the Tipped Maximum Expansion meets stringent lead-free regulations, such as those in California, with its monolithic copper construction.
Renowned for its 99% weight retention and expansion to twice the diameter with 4 petals, the Tipped Maximum Expansion delivers exceptional wound channels, making it a top choice for ethical hunters pursuing big game. Its advanced design ensures reliability across diverse hunting conditions, from dense brush to open terrain.
- Caliber Range: Available from .264 to .358 inches, supporting cartridges like 6.5 Creedmoor, .270 Winchester, 7mm Remington Magnum, .308 Winchester, and .358 Winchester.
- Weight Options: Spans 115 to 200 grains, with popular variants like 120-grain .264, 125-grain .277, and 155-grain .308.
- Hunting Focus: Optimized for large wound channels and deep penetration, ideal for medium to large game in varied environments.
Technical Characteristics
The Lehigh Defense Tipped Maximum Expansion is crafted for hunters seeking durability and precision. Its advanced monolithic design ensures top-tier performance.
- Monolithic Copper: Made from solid copper, ensuring 99% weight retention with no core-jacket separation, even through heavy bone.
- Polymer-Tipped Design: Features a polymer tip and hollow-point cavity for controlled expansion at velocities as low as 1,500 fps, achieving 2x diameter expansion with 4 petals.
- Grooved Design: Includes pressure-relieving grooves to reduce fouling by 15-20% compared to lead-core bullets, enhancing barrel longevity.
- Velocity and Range: Optimized for muzzle velocities of 2,000-3,600 fps, effective to 600+ yards with flat trajectories.
- Reliable Feeding: Streamlined profile with a cannelure ensures smooth cycling in bolt-action and semi-auto rifles.
Reloading requires precision, using standard dies and SAAMI-compliant COAL to manage pressures. Maintain case neck tension (0.002-0.004″) for optimal accuracy, as the Tipped Maximum Expansion’s rugged design excels in tough hunts but demands careful load development.
Ballistics and Performance
With G1 BCs ranging from 0.324 to 0.475, the Tipped Maximum Expansion offers excellent long-range stability and wind resistance, supported by high sectional density for deep penetration. Field tests show a 155-grain .308 Tipped Maximum Expansion achieving 0.25-0.8 MOA at 300 yards with ES/SD under 15 fps from a 1:10 twist barrel. The 120-grain .264 is ideal for deer and antelope, while the 155-grain .308 excels for larger game like elk or moose, retaining energy to 500 yards.
The Expert Ballistics Table below lists key Tipped Maximum Expansion variants from Lehigh specifications, sorted by diameter then weight. BCs are G1; verify on Lehigh’s site for updates.
| Diameter (inches) | Weight (grains) | Ballistic Coefficient (BC) | Sectional Density |
|---|---|---|---|
| 0.264 | 120 | 0.475 | 0.246 |
| 0.277 | 125 | 0.406 | 0.233 |
| 0.284 | 135 | 0.420 | 0.239 |
| 0.308 | 115 | 0.326 | 0.173 |
| 0.308 | 155 | 0.324 | 0.233 |
| 0.358 | 200 | 0.331 | 0.223 |
Groups of 0.25-0.8 MOA achievable; excels to 600 yards with proper shot placement.
Comparison Bullets
The Tipped Maximum Expansion competes with Cutting Edge ER Raptor (fragmenting monolithic) and Barnes TTSX (tipped monolithic), followed by Hornady GMX (monolithic copper), Nosler E-Tip (lead-free alloy), and Lapua Naturalis (pure copper). Its BCs (0.324-0.475) match Cutting Edge for range but trail Barnes TTSX (0.295-0.586) by 5-10% at long range. The Tipped Maximum Expansion’s expansion creates 4 petals for wider wounds than Barnes or Hornady, with expansion at 1,500 fps versus 1,800 fps for competitors, but shank retention (99%) matches TTSX. Against Cutting Edge 120gr 6.5mm, the Tipped Maximum Expansion 120gr .264 penetrates similarly; versus TTSX 130gr .308, it creates more trauma but drops 5% more at 400 yards. Advantages: urban-friendly non-expansion on dry mediums, maximum wound channels. Drawbacks: higher cost ($0.70-$1.00 per bullet), less rapid fragmentation than Chaos lines.
| Bullet | Diameter Range (inches) | Weight Range (grains) | BC Range | Key Feature |
|---|---|---|---|---|
| Lehigh Defense Tipped Maximum Expansion | 0.264-0.358 | 115-200 | 0.324-0.475 | Polymer tip, 4-petal expansion |
| Cutting Edge ER Raptor | 0.224-0.375 | 45-235 | 0.203-0.550 | Fragmenting blades, monolithic copper/brass |
| Barnes TTSX | 0.224-0.338 | 50-225 | 0.295-0.586 | Polymer tip, grooved monolithic |
| Hornady GMX | 0.224-0.338 | 70-200 | 0.245-0.540 | Polymer tip, monolithic copper |
Field reports show Tipped Maximum Expansion matching Cutting Edge in trauma but trailing TTSX by 0.2 MOA at 400 yards, outperforming GMX in low-velocity expansion.
Applications and Practical Aspects
Ideal for hunting:
- 115-120gr .264-.308 for deer and antelope;
- 125-135gr .277-.284 for mid-range elk or bear;
- 155gr .308 for moose or large game;
- 200gr .358 for long-range big game.
Delivers 0.25-0.8 MOA in tuned rifles, ideal for ethical kills.
Reloading
- Load Data: Refer to Lehigh’s reloading manual or website for Tipped Maximum Expansion-specific data, as the monolithic copper design generates higher pressures than lead-core bullets.
- Starting Charges: Begin 5-10% below maximum loads for comparable lead bullets to avoid over-pressure; increase gradually while checking for pressure signs.
- Seating Consistency: Ensure precise seating depths (0.010-0.050″ off lands) to maximize accuracy, as the Tipped Maximum Expansion’s bearing surface is sensitive to inconsistencies.
- Crimp Application: Apply a light to medium crimp on the cannelure for secure bullet retention, particularly in semi-auto or high-recoil rifles, ensuring reliable feeding.
- Barrel Twist Compatibility: Match barrel twist rate to Tipped Maximum Expansion weight (e.g., 1:8 for 120gr .264, 1:10 for 155gr .308) for proper stabilization and optimal accuracy.
- Velocity Check: Chronograph to confirm velocities above 1,500-2,000 fps for reliable expansion, targeting extreme spreads under 15 fps.
- Storage: Store in sealed containers to protect from moisture; suitable for all hunting applications per design.
Conclusion
Lehigh Defense Tipped Maximum Expansion is a premier lead-free hunting bullet, blending high ballistic efficiency with reliable expansion and penetration. Its eco-friendly design and precision make it a top choice for hunters in lead-restricted areas or pursuing big game. Visit official website.
