This article provides comprehensive load data for the Hornady 175gr Sub-X bullet in the .308 Winchester cartridge. We'll explore safe and accurate load development, emphasizing the importance of safety and precision. Remember, always consult your reloading manual and follow all safety precautions before attempting any reloading. This information is for educational purposes only and does not constitute professional advice.
Understanding the Hornady 175gr Sub-X Bullet
The Hornady 175gr Sub-X is a match-grade bullet designed for exceptional accuracy at subsonic velocities. Its design features a boat tail and a specific profile optimized for stability and precision even at lower speeds. This makes it a popular choice for suppressed .308 rifles and long-range shooting where minimizing sound signature is crucial. The reduced velocity also contributes to less recoil.
Key Features of the 175gr Sub-X:
- Match Grade Accuracy: Designed for pinpoint precision.
- Subsonic Velocity: Reduces noise and flash signature.
- Boat Tail Design: Enhances stability and accuracy.
- High Sectional Density: Retains energy at longer ranges.
- Lead-Free Construction: Environmentally friendly option.
Load Data Considerations: Factors Affecting Your Results
Developing the optimal load for your specific rifle requires careful consideration of several factors:
1. Rifle and Barrel Characteristics:
Your rifle's twist rate plays a crucial role in bullet stability. A slower twist rate may not stabilize the heavier 175gr bullet effectively, leading to reduced accuracy. Consult your rifle's specifications or manufacturer's information to verify your barrel's twist rate. Barrel length also affects velocity. Longer barrels generally yield higher velocities.
2. Powder Selection:
Powder selection is paramount for achieving consistent and accurate results. Several powders are suitable for subsonic loads, each exhibiting unique characteristics:
- Varget: Known for its excellent metering characteristics and accuracy.
- IMR 4064: A versatile powder that provides good results with heavier bullets.
- BL-C(2): Another popular choice offering good accuracy and consistency.
- Hodgdon CFE BLK: A relatively new powder option that offers excellent metering and potentially good results.
It's vital to check the manufacturer's load data for your chosen powder with the 175gr Sub-X bullet. Never exceed the maximum recommended charge weight.
3. Primer Type:
While the effect of primer type on subsonic loads is often less pronounced than with higher-velocity loads, using a consistent and high-quality primer like CCI Small Rifle Primers or Federal 210M is recommended for optimal accuracy and reliable ignition.
4. Case Preparation:
Consistent case preparation is fundamental to accurate reloading. This includes proper resizing, trimming to uniform length, cleaning, and priming. Neglecting this can lead to inconsistent pressures and accuracy issues.
Sample Load Data (Illustrative - Not a Substitute for Your Reloading Manual)
The following table presents sample load data. This data is for illustrative purposes only and should not be used as a substitute for your reloading manual. Always consult the current Hornady reloading manual or other reputable sources for loads that are safe and suitable for your specific rifle and equipment.
| Powder | Charge Weight (grains) | Primer | Velocity (fps) (Approximate) | Notes |
|---|---|---|---|---|
| Varget | 24.0 - 25.0 | CCI Small Rifle | 1000-1050 | Start low, work up carefully |
| IMR 4064 | 26.0 - 27.0 | CCI Small Rifle | 1000-1050 | Start low, work up carefully |
| BL-C(2) | 25.0 - 26.0 | CCI Small Rifle | 950-1000 | Start low, work up carefully |
| Hodgdon CFE BLK | 24.5 - 25.5 | CCI Small Rifle | 980 - 1030 | Start low, work up carefully |
Disclaimer: This data is for illustrative purposes only. Always consult your reloading manual and follow all safety precautions.
Safety First: A Critical Reminder
Reloading is inherently dangerous. Failure to follow proper safety procedures can lead to serious injury or death. Always:
- Wear safety glasses.
- Work in a well-ventilated area.
- Use a reloading scale to ensure accurate powder charges.
- Never exceed maximum recommended charge weights.
- Inspect your ammunition before firing.
- Store your ammunition properly.
By following these guidelines and using your reloading manual as your primary reference, you can safely and effectively load the Hornady 175gr Sub-X bullet for your .308 Winchester rifle, achieving subsonic velocities and enhanced accuracy. Remember to start at the minimum charge weight and carefully work up to find the optimal load for your firearm.