Primer Pocket Plugs from 21st Century Shooting

Published on January 12, 2020
Duration: 6:18

This video demonstrates the use of primer pocket plugs from 21st Century Shooting to accurately measure cartridge case capacity. By plugging the primer pocket, reloaders can fill cases with water after tumbling and cleaning, leading to more precise case capacity measurements. This data can then be used for sorting brass or inputting into ballistic software like QuickLOAD for improved load development accuracy.

Quick Summary

Primer pocket plugs from 21st Century Shooting seal cartridge cases, enabling accurate water-based measurements of case capacity. This method is ideal for sorted brass and provides precise data for ballistic software like QuickLOAD, enhancing reloading accuracy and consistency.

Chapters

  1. 00:00Introduction to Primer Pocket Plugs
  2. 00:3121st Century Shooting Products Overview
  3. 00:55Purpose of Primer Pocket Plugs
  4. 01:15Benefits of Case Capacity Measurement
  5. 01:47Advantages of Using Plugs for Tumbling
  6. 02:28Pricing and Availability
  7. 03:02Demonstration: Weighing Brass
  8. 03:23Installing the Plug
  9. 03:37Filling with Water
  10. 04:34Weighing Full Case (Mistake & Correction)
  11. 05:00Second Measurement
  12. 05:39Advantage: Easy Water Drainage
  13. 06:02Conclusion

Frequently Asked Questions

What are primer pocket plugs used for in reloading?

Primer pocket plugs are used to seal the primer pocket of a cartridge case, allowing for accurate measurement of case capacity by filling the case with water without leakage. This is crucial for sorting brass and for precise data entry into ballistic software.

How do primer pocket plugs improve case capacity measurements?

By plugging the primer pocket, these tools prevent water from escaping during the filling process. This allows reloaders to measure the internal volume of tumbled and cleaned brass, leading to more accurate case capacity data than using unfired brass with residual fouling.

Where can I buy primer pocket plugs?

Primer pocket plugs, including versions for both small and large primers, are available from 21st Century Shooting. They also offer related reloading tools and accessories.

What is the benefit of measuring case capacity?

Measuring case capacity is beneficial for sorting brass by volume, ensuring consistency in reloads. It also allows for more accurate load development when using ballistic software like QuickLOAD, as precise case volume data leads to better predictive modeling.

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