Finding the perfect load for your 6mm ARC can significantly impact accuracy and performance. This guide dives deep into Hornady 6mm ARC load data, offering insights beyond their published manuals. We'll cover various bullet weights, powders, primers, and case preparation techniques to help you achieve optimal results. Remember, always prioritize safety and consult your reloading manual before attempting any reloading.
Understanding the 6mm ARC Cartridge
The 6mm ARC (Advanced Rifle Cartridge) is a relatively new cartridge designed for precision shooting at longer ranges. Its short, fat case design makes it suitable for AR-15 platforms while delivering impressive ballistics. Key features that contribute to its popularity include:
- High Ballistic Coefficient (BC) Bullets: Allow for superior long-range accuracy and less wind drift.
- AR-15 Compatibility: Adaptability to the popular AR-15 platform expands its accessibility and versatility.
- Moderate Recoil: Makes it suitable for both experienced and novice shooters.
Hornady 6mm ARC Load Data: A Starting Point
Hornady provides extensive load data in their manuals, but these should be viewed as starting points. Your specific rifle's chamber dimensions and environmental conditions will influence optimal results. Always start with the minimum charge weight listed and work your way up in small increments, meticulously observing for any signs of pressure.
| Bullet Weight (grains) | Powder (Brand & Type) | Powder Charge (grains) | Primer | Velocity (fps) (Approximate) | Notes |
|---|---|---|---|---|---|
| 70 | Hornady Varget | 24.0 - 25.5 | Small Rifle Magnum | 2700-2850 | Start low, work up. Observe for pressure signs. |
| 73 | Hornady Benchmark | 25.0 - 26.5 | Small Rifle Magnum | 2750-2900 | Monitor closely. |
| 80 | Hornady H4350 | 25.5 - 27.0 | Small Rifle Magnum | 2800-2950 | High-quality brass recommended |
| 90 | Hornady H1000 | 27.0-28.5 | Small Rifle Magnum | 2600-2750 | Accurate powder but can be temperature sensitive |
Important Note: This table is for illustrative purposes only. Always consult the current Hornady reloading manual for the most up-to-date and accurate load data. The velocities listed are approximations and may vary depending on your specific setup.
Case Preparation: The Foundation of Accurate Reloading
Proper case preparation is crucial for consistent and accurate loads. This includes:
- Case Cleaning: Remove all residual powder and debris from fired cases.
- Trimming: Trim cases to a uniform length to ensure consistent headspace.
- Deburring: Remove any burrs or imperfections from the case mouths and flash holes.
- Neck Sizing: Resize only the neck of the case to minimize case deformation and improve accuracy.
- Primer Pocket Uniformity: Ensure that the primer pockets are clean and consistent.
Beyond Hornady: Exploring Other Powders and Bullets
While Hornady offers excellent products, exploring other options can expand your possibilities. Experimenting with different powders and bullet weights allows you to fine-tune your loads for optimal performance in your specific rifle. Here are a few examples:
- Powders: IMR 4166, IMR 7977, Accurate 2230, and other suitable powders for 6mm projectiles can also produce excellent results.
- Bullets: Sierra, Berger, and Barnes all produce high-quality bullets ideal for the 6mm ARC. Experiment with different bullet weights and profiles to see which performs best in your rifle.
Troubleshooting: Addressing Common Issues
While reloading can be rewarding, it's important to be aware of potential problems:
- High Pressure Signs: Excessive pressure can damage your rifle and is a serious safety concern. Watch for flattened primers, excessive case head expansion, or any unusual noises or vibrations. If any high pressure signs are observed, immediately stop reloading and re-evaluate your load data.
- Accuracy Issues: Inconsistent accuracy can stem from various factors, including poor case preparation, incorrect powder charges, or issues with your scope/optics.
- Extreme Spread in Velocity: A significant spread in velocity between rounds can negatively affect accuracy. Examine all aspects of your reloading process to identify potential sources of variation.
Conclusion: Safe and Precise Reloading
Reloading your own ammunition for your 6mm ARC can be a rewarding experience, allowing for precise control over the performance of your rifle. However, always prioritize safety and meticulous attention to detail. Start with manufacturer-recommended load data, carefully observe for signs of high pressure, and keep detailed records of your experiments. By combining Hornady's load data with careful experimentation and observation, you can confidently fine-tune your ammunition for exceptional accuracy and performance in your 6mm ARC. Remember, consult your reloading manual and adhere to safe reloading practices.