Finding the right powder for your 300 Blackout loads is crucial for accuracy and safety. H110, also known as Winchester 296, is a popular choice, but requires careful attention to detail. This comprehensive guide explores H110 load data for the 300 Blackout, providing you with the information needed to safely and effectively load your ammunition. We will cover safe practices, data sources, and potential issues to help you achieve optimal results.
Understanding H110 and its Properties
H100 is a slow-burning, magnum pistol powder. This means it's designed for higher pressures and longer barrels. While it works well in the 300 Blackout's relatively short barrel, it's crucial to understand its characteristics to avoid dangerous situations. Under-powered loads are a significant concern with H110. Because it's a slow-burning powder, insufficient charge can lead to incomplete combustion, resulting in high pressure variations and potentially dangerous pressure spikes.
- Key Properties of H110:
- Slow-burning
- Designed for magnum pistol cartridges
- Requires a precise charge weight
- Can be temperature sensitive
- Produces high velocities
Finding Reliable H110 Load Data for 300 Blackout
Always consult multiple reliable sources for load data. Never guess or extrapolate data. Using outdated or incorrect data is incredibly dangerous and could result in a catastrophic firearm malfunction.
- Reputable Sources:
- Hodgdon Reloading Data Center: Hodgdon, the manufacturer of H110, provides a comprehensive online database with verified load data. This is the primary source you should always consult.
- AccurateShooter.com: This website offers a wealth of reloading information, including 300 Blackout load data for various powders, including H110. They often feature user-submitted data along with discussions.
- Loading Manuals from reputable manufacturers: Lyman, Lee, and Sierra all publish reloading manuals containing extensive load data tested by their ballisticians. Always refer to the latest edition.
- Your Reloading Equipment Manual: Consult your specific reloading equipment's manual for recommendations and limitations.
Essential Safety Precautions when Reloading 300 Blackout with H110
Reloading ammunition is inherently dangerous. Safety should always be your top priority. Failure to follow safe practices can result in serious injury or death.
- Start Low and Work Up: Always start with the minimum charge listed in your chosen load data source. Gradually increase the charge weight according to the increments in the data, carefully observing pressure signs.
- Visual Inspection: Before each loading session, thoroughly inspect your cases, bullets, primers, and powder for any damage or defects.
- Consistent Measurements: Use a precise scale to measure your powder charges. Even small variations can impact pressure.
- Proper Case Preparation: Ensure your cases are properly cleaned, sized, and primed before loading.
- Proper Seating Depth: Follow the recommended bullet seating depth provided by your data source.
- Never exceed Maximum Loads: Never exceed the maximum listed charge weight for your chosen components and bullet. Doing so can lead to dangerously high pressures and catastrophic failure.
- Wear Safety Glasses and Ear Protection: Always wear safety glasses and ear protection when reloading.
- Clean Up Your Work Area: Maintain a clean and organized reloading area to minimize the risk of accidents.
Interpreting Load Data Charts
Load data charts typically display the following information:
| Bullet Weight (grains) | Powder Charge (grains) | Primer | COL (inches) | Velocity (fps) | Pressure (PSI) |
|---|---|---|---|---|---|
| 125 | 11.0 | CCI 400 | 2.160 | 2200 | 45,000 |
| 125 | 11.5 | CCI 400 | 2.160 | 2250 | 47,000 |
| 150 | 11.5 | CCI 400 | 2.180 | 2100 | 43,000 |
| 150 | 12.0 | CCI 400 | 2.180 | 2150 | 45,000 |
Note: This is sample data and is not to be used. Always refer to a reliable source for accurate load data specific to your components. The data above shows how bullet weight, powder charge, and pressure are related. Pay close attention to the Maximum Average Pressure (MAP) values.
Troubleshooting Common Issues with H110 Loads
- High Pressure Signs: Look for flattened primers, excessive case head expansion, or unusual noises from the firearm. If you observe any of these signs, immediately cease loading and re-evaluate your load data.
- Inconsistent Accuracy: Ensure your seating depth and overall cartridge dimensions are consistent. Double-check your powder charges to eliminate inconsistencies.
- Squibs: A squib is a round where the powder charge fails to fully ignite. This can damage the firearm. Carefully inspect every round before firing.
Conclusion
H110 can be a highly effective powder for 300 Blackout, but it demands careful attention to detail and meticulous adherence to safety procedures. Always rely on verified load data from reputable sources. Start low and work up, observing for pressure signs, and never exceed the maximum load recommendations. Safe reloading practices are paramount to ensuring both the accuracy of your ammunition and your personal safety. Remember, reload at your own risk. Improper reloading techniques can lead to serious injury or death. If you are unsure about any aspect of the reloading process, seek guidance from experienced reloaders.