The Lee Factory Crimp Die is a popular choice among 9mm reloaders, known for its ability to produce a consistent and reliable crimp. However, understanding its nuances is crucial for achieving optimal results and preventing potential problems. This comprehensive guide delves into the intricacies of using the Lee Factory Crimp die, covering setup, adjustments, and troubleshooting to help you master this essential reloading tool.
Understanding the Lee Factory Crimp Die's Mechanism
Unlike a roll crimp die, the Lee Factory Crimp utilizes a tapered crimp, gradually squeezing the case mouth to secure the bullet. This method is generally preferred for its ability to create a consistent crimp without excessively deforming the case mouth. The die's design allows for precise control over the crimp's intensity, crucial for ensuring reliable feeding and preventing bullet setback.
Key Advantages of the Lee Factory Crimp:
- Consistent Crimp: The tapered design promotes a uniform crimp around the entire bullet, reducing inconsistencies that can lead to feeding problems.
- Precise Control: Adjustments are relatively straightforward, allowing for fine-tuning of the crimp to match different bullet types and case brands.
- Cost-Effective: The Lee Factory Crimp die is generally more affordable than comparable dies from other manufacturers.
- Ease of Use: Once properly set up, the die is relatively easy to use, even for novice reloaders.
Setting Up Your Lee Factory Crimp Die: A Step-by-Step Guide
Proper setup is paramount to achieving successful crimps. Here's a step-by-step guide to setting up your Lee Factory Crimp die:
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Case Preparation: Ensure your cases are properly sized and primed before crimping. Improperly sized cases can lead to inconsistent crimps.
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Bullet Seating: Seat your bullets to the desired depth before crimping. The crimp should only secure the bullet; it shouldn't be relied upon for seating.
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Die Height Adjustment: Begin by setting the die relatively high in the press. This allows for a gradual adjustment process.
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Initial Crimp: Run a few cases through the die, inspecting the crimp closely. You should see a slight start to a crimp, but not a fully formed one at this stage.
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Fine Tuning: Gradually lower the die, running a few cases at each adjustment until you achieve the desired crimp. The crimp should firmly secure the bullet without deforming the case mouth excessively.
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Visual Inspection: Carefully examine the crimped cartridges. The crimp should be uniform around the entire bullet and should not show signs of excessive deformation or damage.
Troubleshooting Common Problems
Even with proper setup, you may encounter some issues. Here are some common problems and solutions:
Problem: Inconsistent Crimp
- Solution: Check for inconsistencies in case preparation or bullet seating. Ensure your die is properly adjusted and the shell holder is correctly seated.
Problem: Excessive Crimp Deformation
- Solution: Raise the die slightly to reduce the crimp intensity. Excessive crimping can lead to feeding problems and damage the case mouth.
Problem: Insufficient Crimp
- Solution: Lower the die slightly to increase the crimp intensity. An insufficient crimp may cause the bullet to move during firing.
Problem: Crimp is too tight on one side
- Solution: This might indicate a problem with your case sizing or shell holder. Check for any binding or irregularities that could cause uneven crimping.
Beyond the Basics: Tips for Optimal Results
- Experimentation: The ideal crimp will vary depending on the bullet type, case brand, and powder load. Experimentation is key to finding the optimal setting.
- Case Lubrication: Properly lubricating your cases can improve the crimping process and reduce the risk of case mouth damage.
- Bullet Selection: Choose bullets designed for the specific cartridge to ensure proper seating and crimping.
The Lee Factory Crimp Die, when used correctly, is a valuable tool for reliable 9mm reloading. By understanding its mechanism, following the setup instructions meticulously, and troubleshooting potential issues effectively, reloaders can achieve consistent and accurate crimps for every round. Remember safety is paramount in reloading – always double-check your work.
