Hornady 308 load data is crucial for anyone reloading .308 Winchester ammunition. This guide provides comprehensive information to help you safely and effectively load your own .308 rounds using Hornady components. Remember, safety is paramount when reloading ammunition; always refer to your specific reloading manual and follow its instructions meticulously. This article is for informational purposes only and should not be considered a substitute for a comprehensive reloading manual.
Understanding Hornady's Approach to Load Data
Hornady, a respected name in the ammunition industry, provides detailed load data in their manuals, focusing on accuracy and safety. Their data considers various bullet weights, powder types, and primers, offering a range of loads suitable for different applications, from target shooting to hunting. They emphasize using their own components for optimal performance, though their data often provides a starting point for experimenting with other brands (always within safety parameters).
Key Factors Affecting Hornady 308 Load Data
Several factors influence the optimal load data for your .308 Winchester:
Bullet Weight and Type
The weight and type of bullet significantly impact the necessary powder charge. Heavier bullets generally require more powder to achieve optimal velocity, while bullet design (e.g., boat tail vs. flat base) affects ballistic characteristics and, consequently, load data. Hornady offers a wide range of bullets specifically designed for the .308 Winchester, each with its unique load data.
- Example: A 150-grain Hornady A-MAX bullet will require a different powder charge compared to a 180-grain Hornady InterLock bullet.
Powder Type and Quantity
Powder type is another critical factor. Different powders burn at different rates, requiring adjustments to the charge weight to achieve the desired pressure and velocity. Hornady typically lists several powder options in their load data, specifying the appropriate charge weight for each. Always use the exact powder type and brand specified. Substituting even a seemingly similar powder can be extremely dangerous.
Primer Type
While the impact is less significant than powder and bullet choices, the primer type can still influence pressure and ignition characteristics. Hornady's load data specifies the recommended primer type; deviating from this recommendation can lead to unsafe pressures.
Case Capacity and Condition
Variations in case capacity between manufacturers and even within the same manufacturer's batches can affect pressure. Using consistent, properly prepared cases (trimmed to length, deburred, and cleaned) is vital for safe and accurate reloading.
Finding and Interpreting Hornady 308 Load Data
Hornady's load data is typically found in their printed reloading manuals, readily available online and at sporting goods stores. These manuals provide extensive tables detailing load data for various components and calibers. Never rely on data found online outside of official Hornady publications. Their manuals contain warnings and safety instructions critical to safe reloading practices.
Interpreting the Data Tables: A Step-by-Step Example
Hornady's tables usually list the following information:
- Bullet Weight: (e.g., 150 grains, 168 grains)
- Bullet Type: (e.g., A-MAX, InterLock)
- Powder Type: (e.g., Varget, IMR4064)
- Powder Charge (grains): The weight of powder to use. This is usually given as a range (e.g., 42.0 - 44.0 grains) – start at the minimum charge.
- Primer Type: (e.g., CCI 200, Federal 210M)
- Velocity (fps): Approximate muzzle velocity at the specified powder charge.
- Pressure (psi): Maximum average pressure generated. Stay within the specified limits.
Example Table (Illustrative; Not Actual Hornady Data):
| Bullet Weight (gr) | Bullet Type | Powder Type | Powder Charge (gr) | Primer Type | Velocity (fps) | Pressure (psi) |
|---|---|---|---|---|---|---|
| 150 | Hornady A-MAX | Varget | 42.0 - 44.0 | CCI 200 | 2700 - 2800 | 55,000 - 58,000 |
| 168 | Hornady BTHP | IMR4064 | 40.0 - 42.0 | Federal 210M | 2600 - 2700 | 54,000 - 57,000 |
Always start at the minimum charge listed in the data table and work your way up gradually, carefully monitoring pressure signs (e.g., excessive case head expansion, unusually hard bolt lift).
Safety Precautions: A Critical Reminder
Reloading ammunition is inherently dangerous. Always adhere to these safety precautions:
- Read and understand the entire reloading manual.
- Wear safety glasses and hearing protection.
- Work in a well-ventilated area.
- Use a reloading scale that is accurate to 0.1 grain.
- Never exceed the maximum listed powder charge.
- Inspect each round carefully before firing.
- Regularly clean and maintain your reloading equipment.
- Store ammunition properly in a cool, dry place.
This comprehensive guide provides a foundational understanding of Hornady 308 load data. Always consult official Hornady manuals for the most accurate and up-to-date information. Safe and responsible reloading practices are essential for your safety and the success of your reloading efforts. Remember, this is not a substitute for a proper reloading manual; always adhere to the manufacturer's instructions.