Lee Precision PM Expander Plug .375 Winchester for powder through expanding die – SE2109

Lee Precision PM expand plug .375 Winchester – SE2109

Original Lee Precision replacement expander plug for the .375 Winchester caliber. It is the internal part of the powder through expanding die, the expansion die through which the powder charge also drops in Lee progressive presses and die sets.

The plug is the element that determines the work performed on the case: the calibrated cylindrical portion opens the inside of the neck to the correct diameter to receive the bullet, while the short conical section at the mouth creates the flare that prevents lead or plated bullets from being scored during seating. Unlike a simple expander, the plug is drilled through its entire length, so that the powder measured by the powder measure mounted above the die falls into the case in the same step as the expansion. It is a part subject to wear and is caliber-specific: it is not interchangeable between cartridges of different diameters, and a worn plug produces irregularly expanded necks, resulting in inconsistent bullet retention.

Main features

• Caliber: .375 Winchester
• Function: neck expansion and mouth flare
• Through-hole for powder charge passage
• Original Lee Precision replacement part, caliber-specific

Recommended use

Replacement of the expander plug in the Lee powder through expanding die for .375 Winchester, after verifying the part number on the official exploded view of your die set.

Package contents

The expander plug only. The die body, adapter funnel, and powder measure are not included.

Manufacturer code: SE2109