The .260 Remington is a popular cartridge known for its accuracy and versatility, making it a favorite among hunters and target shooters alike. H4350 is a potent propellant often chosen for its excellent performance in this caliber. However, safety is paramount when reloading ammunition, and this guide is intended for experienced reloaders only. Always consult your reloading manual and adhere to its safety guidelines before attempting any reloading. This information is for educational purposes only and should not be considered a substitute for professional guidance.
Understanding the Importance of Accurate Load Data
Before diving into specific load data, let's underscore the critical role of precision in reloading. Using incorrect load data can lead to dangerous pressure spikes, resulting in damaged firearms or serious injury. Never deviate from proven load data without a thorough understanding of the potential consequences. The data presented below should only serve as a starting point; always work up to a safe and accurate load for your specific rifle and components.
Factors Affecting Load Data
Several factors can influence the ideal load for your .260 Remington:
- Rifle Barrel: Barrel length, twist rate, and manufacturing tolerances all play a significant role.
- Ammunition Components: The specific brand and type of bullets, primers, and cases will affect performance.
- Environmental Conditions: Temperature and altitude can influence pressure.
- Powder Measure: Consistency in your powder measure is critical for safe and accurate loading.
Sample Load Data for .260 Remington with H4350 (Starting Loads Only)
The data below represents starting loads only. Always start at the minimum listed charge and work up gradually, carefully monitoring pressure signs. Observe your rifle for excessive pressure signs such as:
- Hard Bolt Lift: Difficulty closing the bolt.
- Excessive Primer Flow: Primer flattening or bulging.
- Unusual Sounds or Vibrations: Noises or vibrations beyond the norm for your rifle.
Disclaimer: The following data is for informational purposes only and should not be considered a recommendation. Consult your reloading manual and conduct your own testing to determine safe and accurate loads for your specific firearm and components.
| Bullet Weight (grains) | Bullet Type | H4350 Charge (grains) | Primer Type | Case Brand | COL (inches) | Notes |
|---|---|---|---|---|---|---|
| 120 | Boat Tail Spitzer | 42.0 | CCI BR-2 | Remington | 2.800 | Starting Load |
| 140 | Boat Tail Spitzer | 40.0 | CCI BR-2 | Remington | 2.850 | Starting Load |
| 140 | Sierra MatchKing | 40.5 | Federal 210M | Winchester | 2.850 | Starting Load |
Important Note: COL (Cartridge Overall Length) is crucial for safe and accurate operation. Measure your COL carefully using a case gauge and ensure that it's within the safe range specified in your reloading manual for the specific bullet you're using.
Beyond the Basics: Optimizing Your Loads
Once you've established a safe starting load, you can begin experimenting to fine-tune your loads for optimal accuracy and performance. This may involve adjusting the powder charge in small increments, and testing different bullet types and seating depths. Always meticulously record your findings in a reloading log.
Pressure Testing and Chronographing
For advanced reloaders, pressure testing with a pressure gauge and using a chronograph to measure velocity are invaluable tools for optimizing load development. These tools provide objective data to guide your load development and ensure that you remain within safe pressure limits.
Conclusion: Responsible Reloading Practices
Reloading ammunition offers the potential for greater accuracy and cost savings, but it demands careful attention to detail and a commitment to safety. Never compromise on safety; always consult your reloading manual, start with minimum charges, work up slowly, and meticulously record your findings. This guide serves as a starting point; responsible reloading practices require continuous learning and a deep understanding of the process. Remember, the information provided here is for informational purposes only, and the user assumes all responsibility for safe and proper use of this information.
