The Lee Precision Decapper Mandrels listed on this page fit Lee Precision Collet Dies and Lee Precision Deluxe Rifle Die sets only.
The Decapper Mandrel is part of a precision fit system designed by Lee in which a collet squeezes the case neck against a precision mandrel for a perfect fit with minimum run-out. This process is shown in the image at right where you can clearly see the rifle case being squeezed around the Decapper Mandrel inside a cutaway Lee Precision Collet Die.
Since cases are fire formed to your gun and only neck sized, case life is greatly increased and accuracy is greatly improved.
To select the proper replacement Decapper Mandrel, locate your die set in the drop-down menu below. Or scroll down the page for more details.
NOTE: The Lee Precision Decapper Mandrels listed on this page are replacement mandrels for Lee Precision dies only. They don't include dies or shell holders.