Introduction: Primer crimps are common in military-surplus 50 Cal BMG (Browning Machine Gun) brass and can pose challenges during reloading. Removing these crimps is essential for achieving consistent primer seating and reliable ignition. This article explores various techniques for primer crimp removal from 50 Cal BMG cases, ensuring smooth reloading operations and optimal performance.  50 bmg primers for sale

Understanding Primer Crimps: Primer crimps are small indentations or protrusions around the primer pocket's edge, designed to secure primers in place and prevent them from backing out under recoil. While effective for military use, primer crimps can complicate the reloading process for civilian shooters. Removing primer crimps is necessary to accommodate new primers and ensure proper seating in reloaded cartridges.

Tools and Equipment: Before removing primer crimps from 50 Cal BMG cases, gather the necessary tools and equipment, including:

1. Primer Pocket Swaging Tool: A dedicated primer pocket swaging tool is the most effective and efficient tool for removing primer crimps. Choose a tool specifically designed for 50 Cal BMG cases for optimal results.
2. Case Lube: Apply case lube to lubricate the 50 Cal BMG cases before swaging, reducing friction and preventing damage to the brass.
3. Safety Glasses: Wear safety glasses to protect your eyes from debris or metal shavings during the crimp removal process.

Primer Crimp Removal Techniques:

1. Primer Pocket Swaging:

   • Place the 50 Cal BMG case into the primer pocket swaging tool, ensuring it sits securely.
   • Apply gentle pressure to the swaging tool, gradually removing the primer crimp by expanding the primer pocket.
   • Rotate the case as needed to ensure uniform crimp removal around the entire primer pocket.
   • Check the primer pocket for any remaining crimp material or burrs, and deburr if necessary using a deburring tool.

2. Alternative Methods:

   • For reloaders without access to a dedicated primer pocket swaging tool, alternative methods include using a center punch or countersink bit to carefully remove the crimp by hand. Exercise caution to avoid damaging the brass or enlarging the primer pocket excessively.

Safety Considerations:

• When removing primer crimps from 50 Cal BMG cases, prioritize safety at all times. Wear safety glasses to protect your eyes from flying debris or metal shavings.
• Avoid applying excessive force when swaging primer pockets to prevent brass deformation or damage to the case head.
• Work in a well-ventilated area and avoid inhaling dust or particles generated during the crimp removal process.

Conclusion: Primer crimp removal is a critical step in the reloading process for 50 Cal BMG cases, ensuring consistent primer seating and reliable ignition. By using dedicated primer pocket swaging tools and following proper techniques, reloaders can effectively remove primer crimps and prepare brass for smooth reloading operations and optimal performance in 50 Cal BMG firearms.