Lee Precision Decap Mandrel .282 for 7mm Remington Magnum and 7mm-08

Lee Precision Decap Mandrel .282" – 7mm Remington Magnum

The Lee Precision Decap Mandrel is the decapping spindle for Lee collet neck sizing dies; it is the element against which the collet fingers squeeze the case neck and, at the same time, it carries the pin that ejects the spent primer. This .282" version is the one specified by Lee for 7mm Remington Magnum, 7mm-08 Remington, 7x57 Mauser, 280 Remington, 280 Ackley Improved, 7mm Express, 7x64 Brenneke, and 7mm PRC, and should be replaced when the pin bends or the mandrel becomes worn.

In the collet die, the neck is not compressed by an outer ring and then reopened by an expander, as in full-length dies: four fingers squeeze it directly against the mandrel, so the diameter of the mandrel determines the final internal measurement of the neck. For this reason, Lee makes the mandrels .002" to .003" under the nominal bullet diameter: with brass spring-back of .001"–.002", the finished neck remains about .001" under bullet diameter, which is 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 .282"
• Mandrel diameter: .282"
• Lee design undersize: .002" to .003" under nominal bullet diameter
• Dual function: internal neck sizing reference and decapping
• Quantity specified by Lee: 1 piece per die
• Calibers indicated by Lee: 7mm Remington Magnum, 7mm-08 Remington, 7x57 Mauser, 280 Remington, 280 Ackley Improved, 7mm Express, 7x64 Brenneke, 7mm PRC

Recommended use

Replacement part for Lee collet neck sizing dies — Collet Neck Sizing, Micrometer Neck Sizing, and Ultimate Die Set — in 7mm Remington Magnum, 7mm-08 Remington, 7x57 Mauser, 280 Remington, 280 Ackley Improved, 7mm Express, 7x64 Brenneke, and 7mm PRC calibers. Lee lists it among the spare parts for the 7mm Remington Magnum Ultimate Die Set and other collet dies of the same diameter class.

Package contents

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

Manufacturer code: NS2626