The Dillon shell plate chart is an essential tool for anyone using a Dillon progressive reloading press. Understanding how to use this chart correctly is crucial for efficient and safe reloading. This in-depth guide will cover everything you need to know about the Dillon shell plate chart, ensuring you can confidently load ammunition for your firearms. We'll delve into its purpose, how to interpret it, troubleshooting common issues, and some tips and tricks to maximize its usefulness.
Understanding the Dillon Shell Plate Chart's Purpose
The Dillon shell plate chart acts as a reference guide to match the correct shell plate to the specific cartridge you're reloading. Dillon presses use interchangeable shell plates that dictate the case's position during the reloading process. Each shell plate is specifically designed for a particular cartridge caliber and case length. Using the incorrect shell plate can lead to improper case sizing, powder inconsistencies, and potentially dangerous malfunctions. The chart ensures you're using the right plate for optimal performance and safety.
Deciphering the Dillon Shell Plate Chart: A Step-by-Step Guide
The chart itself is fairly straightforward, but understanding its components is key. Typically, you'll find the chart printed in your Dillon press manual or available online on their website. It usually includes the following information:
- Shell Plate Number: This is the unique identifier for each shell plate. This number is crucial for selecting the correct plate.
- Caliber/Cartridge: This clearly specifies the type of ammunition the shell plate is designed for (e.g., .223 Remington, 9mm Luger, .308 Winchester). Pay close attention to this detail as even slight variations can cause problems.
- Case Length Range: This indicates the acceptable range of case lengths the shell plate can accommodate. Cases outside this range may not feed properly or could be damaged.
Example Table: (Note: This is a simplified example, the actual Dillon chart will be more extensive).
| Shell Plate Number | Caliber/Cartridge | Case Length Range (inches) |
|---|---|---|
| 1 | .223 Remington | 1.750 - 1.770 |
| 2 | 9mm Luger | 0.750 - 0.760 |
| 3 | .308 Winchester | 2.005 - 2.025 |
Using the Chart:
- Identify Your Cartridge: Determine the exact caliber and type of ammunition you're reloading. Be precise, as even slight variations matter.
- Locate the Cartridge on the Chart: Find your cartridge listed in the chart's "Caliber/Cartridge" column.
- Identify the Shell Plate Number: The corresponding shell plate number will be listed in the same row as your cartridge.
- Verify Case Length: Measure your cases to ensure they fall within the specified case length range. If not, you may need a different shell plate.
- Install the Correct Shell Plate: Carefully install the appropriate shell plate in your Dillon press, following the manufacturer's instructions.
Troubleshooting Common Issues with Shell Plates
Despite careful selection, problems can sometimes arise. Here are some common issues and how to address them:
- Cases Not Feeding Properly: This could indicate the wrong shell plate, case length outside the accepted range, or case mouth damage. Double-check your shell plate selection and the case length against the chart. Inspect cases for damage and remove any problematic ones.
- Improper Case Sizing: Ensure your sizing die is correctly adjusted and appropriate for your chosen cartridge. Improper sizing might lead to problems with feeding.
- Powder Inconsistency: This points towards a problem beyond the shell plate, perhaps in the powder measure adjustment or case inconsistencies. Check these areas before suspecting the shell plate.
Tips for Using the Dillon Shell Plate Chart Effectively
- Keep the Chart Handy: Keep a printed copy of the chart near your reloading bench for easy reference.
- Regularly Check the Chart: Double-check your shell plate selection before each reloading session.
- Measure Your Cases: Always measure your cases to ensure they are within the specified range before loading.
- Use the Correct Case Length: Incorrect case length is a major source of problems.
- Clean Your Shell Plates: Regularly clean and lubricate your shell plates to ensure smooth operation.
Using the Dillon shell plate chart correctly is a critical step in safe and efficient reloading. By carefully following the instructions and troubleshooting potential issues, you can ensure optimal performance and avoid potentially dangerous malfunctions. Remember that safety is paramount when reloading ammunition. Always refer to the manufacturer's instructions and exercise caution throughout the process.