Lee Precision 90958 Collet Neck Sizing Die 270 Win

The Lee Precision 90958 Collet Neck Sizing Die is a single-die 270 Winchester reloading tool designed to perform only the neck sizing operation in your reloading press. Rather than pushing the entire case through a full-length sizing die, this collet neck sizer uses a precision steel collet that squeezes only the case neck down against a center mandrel, restoring neck tension and bullet grip without bumping the shoulder back.

Because the collet only contacts the neck, brass that was already fired in your specific rifle will continue to chamber reliably while preserving the fire-formed dimensions of the case body and shoulder. This approach is popular with precision and hunting reloaders running 270 Win ammunition tailored to a single rifle, and it dramatically reduces the work-hardening of the case wall that full-length sizing can cause.

A key practical advantage of the Lee collet design is that no case lube is required - the neck simply compresses around the mandrel with no metal-on-metal drag on the case body. Reloaders also report that brass life is extended by roughly ten times compared to conventional full-length sizing, because the case body is not repeatedly flexed and the neck anneal area is preserved.

This die ships as a single die - the collet neck sizer only - and threads standard 7/8x14 for use on any reloading press that accepts standard large-rifle die threads. It is purpose-built for reloading and is an ideal companion or replacement for reloaders who already own a full-length sizing die and decapping die for 270 Win.