Finding the perfect load for your .308 Winchester using Hornady's 165gr SST bullets requires careful consideration and precise execution. This guide provides comprehensive information, but always consult your reloading manual and adhere to its safety guidelines before attempting any reloading. This information is for educational purposes only and should not be considered a substitute for proper training and adherence to safety protocols. Improper reloading can lead to serious injury or death.
Understanding the Hornady 165gr SST
The Hornady 165gr SST (Super Shock Tip) bullet is a popular choice for hunting and target shooting due to its excellent accuracy and consistent expansion. Its design incorporates a polymer tip for enhanced ballistic coefficient and reliable expansion on impact, making it suitable for a variety of game. The precise weight of 165 grains offers a good balance between recoil and velocity in the .308 Winchester cartridge.
Key Factors Affecting Load Data
Several factors influence the optimal load data for the Hornady 165gr SST in a .308 Winchester:
- Rifle: The specific rifle's chamber dimensions and twist rate will influence the best powder charge and overall performance. A faster twist rate might handle heavier bullets better.
- Powder: Different powders burn at varying rates, affecting pressure and velocity. Experimenting with different powders within safe parameters is essential to find the most accurate and consistent load.
- Primer: Primer type can subtly influence ignition and pressure. While often overlooked, consistent primer choice contributes to overall accuracy and reliability.
- Case Capacity: Variations in case capacity, due to manufacturing tolerances or resizing processes, will affect pressure.
- Collet Length: Proper overall cartridge length (OAL) is crucial to prevent problems such as bullet setback or excessive pressure.
Sample Load Data (Disclaimer: This is for illustrative purposes only. Do not use this data without consulting your reloading manual)
The following data is a hypothetical example and is not a recommendation. Always start with the minimum load listed in your reloading manual and work your way up gradually, carefully observing pressure signs.
| Powder | Powder Charge (grains) | Primer | OAL (inches) | Velocity (fps) (estimated) | Notes |
|---|---|---|---|---|---|
| IMR 4350 | 44 | CCI 200 | 2.80 | 2700 | Example only – adjust based on your manual |
| IMR 4064 | 42.5 | CCI 200 | 2.80 | 2650 | Example only – adjust based on your manual |
| Varget | 43 | Federal 210M | 2.78 | 2750 | Example only – adjust based on your manual |
Remember: These are hypothetical examples only. The actual velocities and pressures will vary depending on your specific rifle and components.
Safety Precautions: A Constant Reminder
- Always wear safety glasses and hearing protection.
- Never exceed the maximum recommended load data in your reloading manual.
- Carefully inspect your cases, primers, and bullets for damage before loading.
- Use a reliable reloading scale to measure your powder charges precisely.
- Clean your rifle thoroughly after each reloading session.
- Start low and work up gradually to find the optimal load for your rifle.
- Pay close attention to pressure signs (e.g., flattened primers, excessive bolt lift); if you observe any unusual pressure signs, cease loading immediately.
Finding Your Perfect Load: A Step-by-Step Process
- Consult your reloading manual: This is the most critical step. Find load data specifically designed for the Hornady 165gr SST bullet with the powder you intend to use.
- Start low: Begin with the minimum charge weight recommended in your manual.
- Gradually increase the charge: Increase the charge in small increments (0.1 to 0.3 grains), carefully observing pressure signs with each increment.
- Chronograph your loads: A chronograph measures muzzle velocity, which helps ensure consistency and safety.
- Test for accuracy: Fire several rounds at the target to evaluate accuracy.
- Record your data: Keep a detailed log of your results, including powder charge, primer, OAL, velocity, and accuracy.
By following these steps and consulting your reloading manual, you can safely and accurately develop a load for your .308 Winchester rifle that optimizes the performance of the Hornady 165gr SST bullet. Remember, safety is paramount. If you are unsure about any aspect of reloading, seek guidance from experienced reloaders or take a reloading class.
