Lee Precision PM Expander Plug .44-40 WCF for powder through expanding die – SE2141

Lee Precision PM expand plug .44-40 WCF – SE2141

Original Lee Precision replacement expander plug for the .44-40 Winchester (.44 WCF) caliber. It is the internal component 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 accept 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 measure mounted above the die falls into the case in the same step as the expansion. It is a wear-prone, caliber-specific part: 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: .44-40 Winchester (.44 WCF)
• Function: neck expansion and mouth flaring
• 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 the .44-40 WCF caliber, after verifying the part number on the official exploded view of your die set.

Package contents

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

Manufacturer code: SE2141