Lee Precision EZ X Expander Decapping Die 243 Winchester

Lee Precision EZ X Expander 243CAL MED – 243 Winchester

The Lee Precision EZ X Expander is the decapping-expander rod that works inside Lee full-length resizing dies: in a single press stroke, it removes the spent primer and expands the case neck to the necessary dimension for bullet seating. This version, designated by Lee as EZ X EXP 243CAL MED, is designed for .243 Winchester and 6mm (.244) Remington and is the replacement part to order when the decapping pin bends or breaks, a common occurrence with cases featuring crimped primers.

It consists of a single steel rod: the tip acts as the decapping pin, while the intermediate bulge—the .242" expander ball—internally resizes the neck as the case moves out of the die. The total length specified by Lee is 3.370". In the exploded view of Lee full-length dies, the rod is held in the die body by the decapper clamp collar (code SD2151) and the O-ring (code SD2153), both of which are separate spare parts.

Main features

• Lee designation: EZ X EXP 243CAL MED
• Expander diameter: .242"
• Total length: 3.370"
• Dual function: neck expansion and decapping in a single operation
• Quantity specified by Lee: 1 piece per resizing die
• Calibers indicated by Lee: 243 Winchester, 6mm (.244) Remington

Recommended use

Replacement part for Lee full-length resizing dies in .243 Winchester and 6mm (.244) Remington calibers. Among the products that use it, Lee lists the RGB 243 set (code 90873). The rod is removed from the die body by loosening the locking collar and must be reinstalled while maintaining alignment with the case flash hole.

Package contents

The spare part is supplied individually and includes only the decapping-expander rod. It does not include the die body, the locking collar (SD2151), or the O-ring (SD2153), which Lee lists as separate spare parts.

Manufacturer code: SE2171