The Federal Fusion 308 Winchester 165-grain bullet is a popular choice among hunters and target shooters alike. Its reputation for accuracy and consistent performance stems from its design and construction. This post will delve into the ballistics of this specific cartridge, exploring its capabilities and suitability for various applications. While a precise ballistics chart depends on several factors (like barrel length, twist rate, and atmospheric conditions), we will examine typical performance data and discuss the variables that impact ballistic results.
Understanding Ballistic Data: Key Factors
Before presenting data, it's crucial to understand that ballistic charts are not absolute. Several factors significantly influence bullet trajectory and performance:
- Barrel Length: Longer barrels generally yield higher velocities.
- Twist Rate: The rate of rifling in the barrel affects bullet stability. An improper twist rate can lead to inaccuracy.
- Altitude and Temperature: Air density, influenced by altitude and temperature, affects drag and thus velocity and trajectory.
- Muzzle Velocity: The initial speed of the bullet leaving the barrel is the foundation of all ballistic calculations. Variations in ammunition, even within the same batch, can impact muzzle velocity.
Typical Ballistic Data for Federal Fusion 308 165 Grain
While specific data might vary slightly depending on testing conditions, the following represents typical ballistic performance for the Federal Fusion 308 165-grain bullet fired from a standard 24-inch barrel:
(Note: These figures are estimations and should not be used for critical applications. Always consult your own testing results or manufacturer data for precise information.)
| Distance (yards) | Velocity (fps) | Energy (ft-lbs) | Drop (inches) | Wind Drift (inches) (10mph wind)** |
|---|---|---|---|---|
| 100 | 2600 | 2700 | -2 | -4 |
| 200 | 2300 | 2000 | -10 | -15 |
| 300 | 2050 | 1500 | -25 | -30 |
| 400 | 1800 | 1100 | -45 | -50 |
| 500 | 1600 | 800 | -70 | -70 |
Wind Drift: This is an approximation, assuming a 10 mph crosswind at 90 degrees to the bullet's trajectory. Wind drift will increase dramatically with higher wind speeds.
Federal Fusion 308 165 Grain: Bullet Construction and Performance
The Federal Fusion bullet employs a unique design intended to deliver consistent accuracy and reliable expansion on game animals. Key features include:
- Copper Jacket: Provides durability and consistent performance.
- Bonded Core: Ensures the core and jacket remain intact upon impact, promoting deep penetration.
- Controlled Expansion: Designed to expand reliably for optimal energy transfer to the target.
This combination of features makes the Federal Fusion 165-grain a versatile cartridge suitable for a range of hunting applications, from medium-sized deer to larger game. The bonded core ensures deep penetration, even at longer ranges, while the controlled expansion maximizes damage and reduces the risk of pass-throughs.
Beyond the Chart: Factors Affecting Accuracy
While the ballistic chart provides a general overview, achieving consistent accuracy with the Federal Fusion 308 165 grain (or any cartridge) relies on more than just the ammunition itself. Factors like:
- Rifle Accuracy: Your rifle's inherent accuracy plays a significant role.
- Scope and Mounting: A high-quality scope correctly mounted is crucial.
- Shooting Technique: Consistent shooting technique is essential for precise shot placement.
- Ammunition Consistency: Even within a single box, minor variations in ammunition can affect accuracy.
Conclusion
The Federal Fusion 308 165-grain bullet offers a robust combination of accuracy and performance. Understanding the factors that influence ballistics and utilizing accurate data is crucial for maximizing its potential, whether for hunting or target practice. Remember that the data presented here is for general informational purposes and may vary based on several factors. Always consult your specific testing results and manufacturer data for precise ballistic information relevant to your firearm and environmental conditions.
