Lee Precision Collet Neck Sizer Die Features The Lee Collet Neck Sizer Die for .22 Creedmoor works by squeezing the fired case neck against a precision mandrel using a steel collet aligning the neck with the case body far more precisely than a conventional expander ball sizing method. Because only the neck is sized the rest of the case retains the fire-formed dimensions matched to the shooter s own chamber which is a key contributor to the improved accuracy and extended case life this die delivers. Eliminating the need for case lubrication also speeds up the reloading process and removes a common source of dented shoulders. This neck sizer is intended specifically for brass that has already been fired in the handloader s own rifle since the collet sizing method relies on that fire-formed body to maintain proper headspace. For precision .22 Creedmoor shooters chasing tight groups and long case life this die is a straightforward addition to an existing reloading setup. It installs in a standard press and works alongside other dies already in a handloader s die set. Reliable simple to use and focused purely on neck sizing it is a practical tool for anyone serious about reloading accuracy. Lee Precision Collet Neck Sizer Die Specifications Manufacturer: Lee Precision Model: Collet Neck Sizer Die Caliber: .22 Creedmoor Die Type: Neck Sizer Die Available At: GrabAGun