Accurate No. 2 powder is a popular choice among reloaders for its versatility and performance across various cartridges. However, achieving consistently accurate results demands precise load data. This guide dives deep into understanding, finding, and utilizing accurate No. 2 load data, ensuring safety and optimal performance.
Understanding Accurate No. 2 Powder
Accurate No. 2 is a slow-burning, extruded powder, often preferred for pistol and revolver cartridges, especially those with heavier bullets. Its characteristics make it suitable for both target shooting and self-defense applications. However, its slower burn rate necessitates careful attention to load data. Using incorrect data can lead to dangerous pressure spikes, potentially damaging your firearm and causing injury.
Key Characteristics of Accurate No. 2:
- Extruded Powder: This manufacturing process results in consistent granule size and shape, leading to more predictable performance compared to ball powders.
- Slow-Burning: This characteristic makes it ideal for larger cases and heavier bullets.
- Versatility: While popular in pistol calibers, it can also be used in some rifle calibers, but always refer to reliable load data.
- Sensitivity to Temperature: Like all powders, Accurate No. 2 can be affected by temperature changes. Extreme temperatures can alter its burn rate.
Sourcing Accurate and Reliable No. 2 Load Data
Finding accurate load data is paramount for safe and effective reloading. Relying on outdated or unreliable sources is incredibly dangerous.
Reputable Sources of Load Data:
- Powder Manufacturer's Website: Hodgdon, the manufacturer of Accurate No. 2, provides load data on their official website. This is your primary source and should be consulted first.
- Reloading Manuals: Established reloading manuals from reputable publishers (like Lyman, Hornady, Lee) contain extensively tested load data. Always check for the latest edition.
- Independent Reloading Websites: Some websites offer load data compiled from various sources. Use caution and verify the information against multiple sources, especially the manufacturer's data. Be wary of forums or websites that don't clearly state their sources.
- Avoid Unverified Sources: Never use load data found on untrusted websites, forums, or from unreliable individuals. This is a critical safety precaution.
Interpreting and Utilizing Accurate No. 2 Load Data
Once you have sourced reliable data, understanding how to interpret and safely use it is vital.
Deciphering Load Data Charts:
Load data charts typically include:
- Caliber: The specific cartridge (e.g., .38 Special, .45 ACP).
- Bullet Weight: The weight of the bullet in grains (e.g., 158 gr, 200 gr).
- Bullet Type: (e.g., jacketed hollow point (JHP), full metal jacket (FMJ), lead round nose (LRN)).
- Powder Charge: The weight of Accurate No. 2 powder in grains. This is the most critical piece of information.
- Primer Type: (e.g., small pistol primer, large pistol primer).
- Case Length: The length of the prepared cartridge case.
- Velocity: The expected muzzle velocity (fps).
- Pressure: The pressure generated, usually expressed in PSI (pounds per square inch) or CUP (copper units of pressure). Stay below maximum pressure!
| Caliber | Bullet Weight (gr) | Powder Charge (gr) | Primer Type | Velocity (fps) | Pressure (CUP) |
|---|---|---|---|---|---|
| .38 Special | 158 | 4.0 | Small Pistol | 850 | 12,000 |
| .45 ACP | 230 | 5.5 | Large Pistol | 800 | 14,000 |
(Example Data – Always verify with your chosen source)
Safe Reloading Practices:
- Start Low, Work Up: Begin with the minimum charge listed in the data. Increase the charge in small increments (0.1 to 0.2 grains) while carefully observing pressure signs.
- Observe for Pressure Signs: Excessive pressure can manifest as flattened primers, bulged cases, or unusual sounds from the firearm. Stop immediately if you observe these signs.
- Weigh Your Powder: Use a precise powder scale to measure your powder charges. Consistency is key.
- Clean Your Equipment: Maintain clean reloading equipment to prevent malfunctions and ensure accuracy.
- Never Mix Powder: Avoid mixing different types of gunpowder in your equipment.
- Always Double Check: Verify all components and measurements before loading.
Case Studies and Examples of Load Data Variations
Load data can vary slightly depending on several factors:
- Bullet Manufacturer: Bullet hardness and composition can affect pressure.
- Case Manufacturer: Slight variations in case dimensions can influence pressure.
- Environmental Factors: Temperature and humidity can impact powder performance.
Example: While a particular load might be safe with one bullet manufacturer's 158-grain bullet, it may be unsafe with another manufacturer's bullet of the same weight due to differences in its composition.
It's crucial to find data specific to the bullet and case brands you are using.
Conclusion: Accuracy Through Precision
Reloading with Accurate No. 2 powder can offer significant advantages in terms of cost and performance. However, safety should always be the top priority. By diligently following safe reloading practices, carefully sourcing load data from reputable sources, and understanding the nuances of powder characteristics, you can achieve accurate and reliable results. Remember that consistent accuracy comes from responsible and precise reloading techniques. Never compromise safety.