The .45-70 Government cartridge, a venerable round with a rich history, continues to be a favorite among hunters and enthusiasts. Hornady, a respected name in ammunition manufacturing, offers a wide range of components for loading this powerful cartridge. This guide provides comprehensive Hornady 45-70 load data, emphasizing safety and accuracy. Always consult the latest Hornady reloading manual before undertaking any reloading activities. This information is for guidance only and should not be considered a substitute for the official manual.
Understanding Hornady's Approach to 45-70 Loads
Hornady's load data focuses on providing a balance of performance and safety across different bullet weights and styles. Their manuals detail various powder types and charges, allowing reloaders to tailor their loads to specific applications, whether it's hunting large game or engaging in target practice. Key considerations include:
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Bullet Weight: Hornady offers loads for a wide range of bullet weights, typically from 300 grains to 500 grains. Heavier bullets generally offer more knock-down power at longer ranges, while lighter bullets may provide flatter trajectories at shorter ranges.
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Powder Type: Hornady specifies compatible powders, ensuring consistent ignition and pressure levels. The choice of powder can significantly impact velocity and accuracy. Experimentation within the provided data range is crucial for finding the optimal load for your specific firearm.
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Case Capacity: The .45-70 case capacity plays a significant role in determining maximum loads. Overloading can lead to dangerous pressure spikes, potentially causing damage to your firearm or injury. Always adhere strictly to the recommended maximum loads provided by Hornady.
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Primer Type: Hornady will specify the recommended primer type for each load. Using the incorrect primer can affect ignition consistency and pressure.
Safety First: Essential Reloading Precautions
Reloading ammunition involves inherent risks. Always prioritize safety by following these crucial guidelines:
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Use a Reloading Manual: Never rely solely on online information. Always consult the latest Hornady reloading manual for the most up-to-date and accurate load data.
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Proper Equipment: Invest in high-quality reloading equipment, including a press, scales, and case gauge. Regularly maintain and inspect your equipment for wear and tear.
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Careful Measurement: Accurately measure powder charges using a calibrated powder scale. Consistent powder charges are essential for safe and reliable performance.
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Double-Check Your Work: Before seating bullets, meticulously double-check your charges to ensure accuracy. A single mistake can have serious consequences.
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Start Low, Work Up: When developing a new load, start with the minimum charge listed in the Hornady manual. Gradually increase the charge in small increments, carefully monitoring pressure signs (e.g., excessive primer flow, flattened primers).
Interpreting Hornady's Load Data Tables
Hornady's load data tables typically include:
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Bullet Weight and Type: Specifies the bullet weight and construction (e.g., jacketed, lead).
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Powder Type and Charge: Indicates the recommended powder type and charge weight in grains.
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Primer Type: Specifies the recommended primer type.
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Velocity (fps): The approximate muzzle velocity in feet per second.
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Pressure (CUP): The pressure generated by the load in Copper Units of Pressure.
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Notes: Any relevant notes or warnings about the load.
Remember: These are example data points. Always refer to the current Hornady manual for the most accurate and updated information.
Beyond the Manual: Factors Affecting Load Performance
Several factors beyond the Hornady manual can influence your load performance:
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Rifle Barrel: The length and rifling of your rifle barrel can affect both velocity and accuracy.
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Environmental Conditions: Temperature and humidity can affect powder burn rate and consequently, velocity and pressure.
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Lot-to-Lot Variation: Even within the same powder type, variations can exist between different production lots.
Conclusion: Responsible Reloading with Hornady
Hornady provides comprehensive load data for the .45-70 Government cartridge, allowing reloaders to customize their ammunition for various applications. However, responsible reloading demands strict adherence to safety guidelines and diligent attention to detail. Always prioritize safety, consult the official Hornady manual, and enjoy the rewarding experience of crafting your own precision ammunition. Remember, reloading is a skill that requires practice and patience. Start slowly, be meticulous, and always prioritize safety above all else.
