The .358 Winchester, a powerful and versatile cartridge, demands careful consideration when handloading. This guide dives deep into 358 Winchester load data, covering everything from choosing the right components to ensuring safety and accuracy. We'll explore various bullet weights, powders, and primers, offering a comprehensive resource for both beginners and experienced reloaders. Remember, safety is paramount when reloading ammunition. Always consult your specific reloading manual for the most accurate and up-to-date information before attempting any reloading.
Understanding the .358 Winchester Cartridge
The .358 Winchester, introduced in 1955, is known for its impressive stopping power and flat trajectory. It's a favorite for hunting medium-sized game, from deer to hogs, and its relatively manageable recoil makes it suitable for many shooters. Its popularity among handloaders stems from the ability to fine-tune loads for specific hunting scenarios and preferences.
Key Cartridge Characteristics:
- Caliber: .358 inch (9.1 mm)
- Case Length: 2.125 inches
- Typical Bullet Weights: 150-250 grains
- Applications: Hunting medium-sized game, target shooting
Selecting Your Reloading Components
Choosing the correct components is crucial for safe and accurate 358 Winchester loads. Let's examine each element:
1. Bullets:
The bullet's weight, profile, and construction significantly impact the performance of your load. Popular choices include:
- 150-grain bullets: Offer higher velocities and flatter trajectories, ideal for longer-range shots. Look for bullets with good ballistic coefficients for improved accuracy.
- 180-grain bullets: Provide a balance of velocity and energy, suitable for a wide range of hunting situations.
- 200-250-grain bullets: Designed for maximum stopping power at closer ranges. These heavier bullets are often preferred for hunting larger game.
Choosing the right bullet depends on your intended application. For example, a 150-grain bullet might be ideal for deer hunting at longer ranges, while a 200-grain bullet could be better suited for close-range hog hunting.
2. Powders:
Powder selection heavily influences the performance of your 358 Winchester loads. Different powders burn at different rates, affecting pressure, velocity, and accuracy. Some popular choices include:
- IMR 4350: A versatile powder suitable for a wide range of bullet weights.
- IMR 4895: Another popular choice known for its consistent performance.
- Hodgdon H4895: Similar to IMR 4895, this powder provides reliable results.
- Accurate #9: A slower-burning powder often used with heavier bullets.
- Reloder 7: A versatile option for medium to heavier bullets.
Always consult your reloading manual for recommended powder charges and bullet weights. Never exceed the maximum recommended charge.
3. Primers:
Primers ignite the powder, initiating the combustion process. While many different primers will work, using a magnum primer is generally recommended for the 358 Winchester due to the higher pressure generated by some loads. Examples include:
- Federal 215 Magnum
- CCI 250 Magnum
- Winchester WLR Magnum
Sample 358 Winchester Load Data
Disclaimer: The following data is for informational purposes only. Always consult your reloading manual and start at the minimum charge listed there before working up to a maximum charge. Never exceed the maximum listed charge. This table is not a substitute for a comprehensive reloading manual.
| Bullet Weight (grains) | Powder (type) | Powder Charge (grains) | Primer | COL (inches) | Notes |
|---|---|---|---|---|---|
| 180 | IMR 4350 | 45.0 | Federal 215M | 2.550 | Start low and work up |
| 180 | IMR 4895 | 48.0 | Federal 215M | 2.550 | Start low and work up |
| 200 | Accurate #9 | 50.0 | CCI 250M | 2.575 | Start low and work up |
| 250 | Reloder 7 | 55.0 | Winchester WLRM | 2.600 | Start low and work up |
COL refers to Cartridge Overall Length. It's the total length of the loaded cartridge, measured from the base of the case to the tip of the bullet.
Safety Precautions
Reloading ammunition is inherently dangerous. Failure to follow proper safety precautions can result in serious injury or death. Here are some critical safety tips:
- Always wear safety glasses.
- Work in a well-ventilated area.
- Never exceed the maximum recommended powder charge.
- Use a scale to measure powder charges accurately.
- Inspect each case and bullet for damage before loading.
- Store loaded ammunition in a safe and secure location.
- Familiarize yourself with your reloading equipment and techniques before starting.
- Consult a reloading manual for specific information and warnings.
Conclusion: Responsible Reloading of 358 Winchester
Handloading 358 Winchester ammunition provides shooters with the ability to customize loads for specific needs and preferences. However, it's crucial to emphasize that responsible and safe reloading practices are paramount. By diligently following proper procedures and consulting reputable reloading manuals, you can enjoy the benefits of handloading while minimizing risks. Remember, accuracy and safety should always be your top priorities.