21st Century - Expander Mandrels (Stainless Steel) Size:0.31 The result is a bullet

The result is a bullet that flies true

circular Carbide Cutter provides years of reliable use

Bore Tech’s Chameleon Gel™ redefined cleaning by pioneering the combination of chemical and mechanical cleaning action into a color indicating and 100% barrel safe cleaner and polish

The open finger tips provide improved ventilation and at the same time enable this hand to be used for loading

pulling the expander button through the case can present a problem because residual deposits left from firing can create friction when the expander is withdrawn

21st Century - Expander Mandrels (Stainless Steel) Size:0.31 The result is a bullet21st Century Innovation Expander Mandrels when used with the Expander Die Body will expand the case neck for proper fit on the turning arbor. Precision CNC machined from high grade stainless steel. 21st Century Expander Mandrels and Arbors are designed for proper fit in the 21st Century die bodies. While these may work in most Sinclair and PMA die bodies we cannot guarantee proper fitment in those bodies. These are sized . 0008" (+ . 0002") below