Understanding dram equivalents is crucial for accurate reloading of 20 gauge shotshells. This chart provides a clear and concise reference, but remember that exact weights can vary depending on the manufacturer and powder type. Always consult your specific powder manufacturer's loading data before reloading ammunition. Safety should always be your top priority.
What is a Dram Equivalent?
A dram equivalent (often abbreviated as "dram eq.") in shotshell reloading refers to the weight of the powder charge in relation to the weight of a standard volume of black powder. While modern smokeless powders behave differently than black powder, the dram equivalent system provides a convenient way to compare powder charges across different gauges and shot loads. It's important to note that dram equivalent is NOT a measure of volume, but rather a weight comparison to a historical standard.
20 Gauge Dram Equivalent Chart: A Quick Reference
This chart offers a generalized overview. Always cross-reference this with your specific powder manufacturer's data. Improper reloading can lead to dangerous malfunctions.
| Dram Equivalent | Approximate Powder Weight (Grains) | Typical Shot Weight (oz) | Notes |
|---|---|---|---|
| 12 | Approximately 16-18 grains | 7/8 oz | Light target loads |
| 13 | Approximately 18-20 grains | 7/8 oz | Light field loads |
| 14 | Approximately 20-22 grains | 1 oz | Common field loads |
| 15 | Approximately 22-24 grains | 1 1/8 oz | Heavier field loads |
| 16 | Approximately 24-26 grains | 1 1/4 oz | Heavy field loads, waterfowl |
Disclaimer: This chart is for informational purposes only and should not be used as a substitute for your powder manufacturer's loading data. Using incorrect data can result in dangerous pressure levels. Always follow the specific instructions and safety recommendations provided by your powder manufacturer.
Factors Affecting Dram Equivalents
Several factors influence the actual powder weight associated with a specific dram equivalent:
- Powder Type: Different powders have different densities and burn rates. A 14-dram equivalent load of one powder will have a different weight than a 14-dram equivalent load of another.
- Manufacturer's Data: Always consult the reloading manual provided by the specific powder manufacturer you are using. This manual will have the most accurate and safest loading data for their products.
- Shot Size and Weight: The type and amount of shot used will also affect the overall pressure within the cartridge.
Beyond the Chart: Safe Reloading Practices
This chart offers a starting point, but safe and accurate reloading involves much more than just dram equivalents. Key considerations include:
- Using a Reloading Scale: A precise reloading scale is absolutely essential for accurate powder measurement. Variations in powder weight can drastically affect pressure.
- Understanding Component Compatibility: Ensure all components (primer, hull, powder, wads, shot) are compatible. Using the wrong combination can lead to dangerous pressure spikes.
- Proper Technique: Mastering the reloading process is crucial for safety. Carefully follow the steps outlined in your reloading manual.
- Regular Maintenance of Equipment: Keep your reloading equipment clean and well-maintained to ensure consistent results.
Always prioritize safety. If you are unsure about any aspect of reloading, consult with experienced reloaders or take a reloading course.
Conclusion
While the dram equivalent chart provides a useful reference point, it's crucial to remember its limitations. Accurate and safe shotshell reloading necessitates meticulous attention to detail and adherence to the manufacturer's data. Never compromise safety for convenience. Happy and safe reloading!
