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Lee Precision Decap Mandrel .241 for 243 Winchester

Lee Precision Decap Mandrel .241 for 243 Winchester

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SKU:LEE.NS2622

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Lee Precision Decap Mandrel .241" – 243 Winchester

The Lee Precision Decap Mandrel is the decapping spindle for Lee collet resizing dies: it is the component against which the collet fingers squeeze the case neck, while also carrying the pin that ejects the spent primer. This .241" version is the one specified by Lee for 243 Winchester, 243 Winchester Ackley Improved, 6mm Creedmoor, and 6mm (.244) Remington, and should be replaced when the pin becomes bent or the mandrel shows signs of wear.

In the collet die, the neck is not compressed by an outer ring and then expanded by an expander ball, as in full-length dies: four fingers squeeze it directly against the mandrel, meaning the mandrel diameter determines the final inner dimension of the neck. For this reason, Lee manufactures the mandrels .002" to .003" under the nominal bullet diameter: with a brass spring-back of .001"–.002", the finished neck remains about .001" under bullet diameter, providing the correct tension to hold it. Lee describes this system as capable of producing a precisely aligned neck, reducing runout.

Main features

  • Lee designation: DECAP MANDREL .241"
  • Mandrel diameter: .241"
  • Lee design undersize: .002" to .003" under nominal bullet diameter
  • Dual function: internal reference for neck resizing and decapping
  • Quantity specified by Lee: 1 piece per die
  • Calibers indicated by Lee: 243 Winchester, 243 Winchester Ackley Improved, 6mm Creedmoor, 6mm (.244) Remington

Recommended use

Replacement part for Lee neck resizing dies — Collet Neck Sizing, Micrometer Neck Sizing, and Ultimate Die Set — in calibers 243 Winchester, 243 Winchester Ackley Improved, 6mm Creedmoor, and 6mm (.244) Remington. Lee lists it among the spare parts for the 243 Winchester Ultimate Die Set and other neck resizing dies.

Package contents

The spare part is supplied individually and includes only the decapping mandrel. The die body, collet assembly, and other die components are not included.

Manufacturer code: NS2622

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