Lee Precision PM Expander Plug .38-40 WCF for powder through expanding die – SE2797

Lee Precision PM expand plug .38-40 WCF – SE2797

Original Lee Precision replacement expander plug for the .38-40 Winchester (.38 WCF) caliber. It is the internal component of the powder-through expanding die, the die used in Lee progressive presses and die sets through which the powder charge is also dropped.

The plug is the element that performs the work 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 entrance creates the flare that prevents lead or plated bullets from being scratched during seating. Unlike a simple expander, the plug is drilled through its entire length, so that the powder metered by the measure mounted on top of the die falls into the case during the same stroke 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: .38-40 Winchester (.38 WCF)
• Function: neck expansion and mouth flaring
• Through-hole for the powder charge passage
• Original Lee Precision replacement, caliber-specific

Recommended use

Replacement of the expander plug in the Lee powder-through expanding die for the .38-40 WCF caliber, after verifying the part number on the official schematic of your die set.

Package contents

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

Manufacturer code: SE2797