The 300 Blackout cartridge has earned a solid reputation for its versatility and effectiveness, making it a popular choice for both home defense and hunting applications. When it comes to reloading this versatile round, H110 powder stands out as a favorite among many reloaders. However, understanding and properly utilizing this powerful powder requires careful attention to detail. This guide delves into the specifics of using H110 in 300 BLK loads, focusing on safety, accuracy, and optimal performance.
Understanding H110 Powder
H110, also known as Winchester 296, is a slow-burning, extruded powder particularly well-suited for magnum pistol cartridges and certain rifle rounds like the 300 Blackout. Its slow burn rate contributes to high velocities and consistent performance, especially with heavier bullets. However, its sensitivity to charge weight and its potential for high pressure make precise measurement and adherence to published data crucial.
Key Characteristics of H110:
- Slow-burning: Ideal for generating high velocities.
- High pressure potential: Requires meticulous attention to charge weight.
- Temperature sensitivity: Performance can be affected by extreme temperatures.
- Extruded powder: Offers consistent particle size and burn rate.
300 BLK Load Data with H110: A Cautious Approach
Disclaimer: The following information is for informational purposes only and should not be considered a substitute for reloading manuals from reputable manufacturers like Hodgdon, Alliant, or Accurate Powder. Always consult the latest edition of a reloading manual specific to your chosen components before attempting any reloading. Never exceed the maximum listed charge weight.
The optimal load data will vary depending on several factors, including bullet weight, bullet type, case brand, and primer type. Always start at the minimum charge weight listed in your reloading manual and work your way up, carefully monitoring pressure signs.
Potential Bullet Weights and Corresponding Data (Illustrative Only):
This table provides illustrative examples and should not be used for actual reloading. Consult your reloading manual for safe and accurate load data specific to your components.
| Bullet Weight (grains) | Approximate Charge Weight (grains) (ILLUSTRATIVE ONLY - DO NOT USE) | Primer Type | Case Brand | Notes |
|---|---|---|---|---|
| 150 | (Consult your manual) | Small Rifle | (Consult your manual) | Start low, work up |
| 180 | (Consult your manual) | Small Rifle | (Consult your manual) | Start low, work up |
| 220 | (Consult your manual) | Small Rifle | (Consult your manual) | Start low, work up. May require specific case prep |
Safety Precautions for Reloading 300 BLK with H110
- Always wear safety glasses and hearing protection.
- Work in a well-ventilated area.
- Use a scale capable of measuring powder charges to 0.1 grain accuracy.
- Never mix powders.
- Inspect cases for any imperfections before loading.
- Visually inspect loaded rounds before firing.
- If you encounter high pressure signs (excessive primer flow, flattened primers, unusually hard bolt lift, etc.) immediately cease loading and consult your reloading manual or a knowledgeable reloader.
Conclusion
Reloading 300 Blackout ammunition with H110 powder can produce excellent results in terms of accuracy and velocity. However, this powerful powder demands careful attention to detail and strict adherence to safe reloading practices. Always prioritize safety and consult reliable reloading manuals before beginning any reloading project. Remember, this information is for educational purposes and should not be considered a substitute for proper training and the use of updated reloading manuals.
