243 Collet / Neck Size Die.

A collet squeezes the case neck against a precision mandrel for a perfect fit with minimum run-out. No lube case is needed and neck sizing extends case life. This dies sizes only the neck to preserve the perfect fit of fire forming. Only reload cases that have been fired in your gun. Not recommended for autoloaders, slide or lever action guns.

243 Winchester Collet (Neck) Die Set.
Die set includes: Collet neck sizing die, dead length bullet seating die, shell holder, powder dipper, charge table and storage box.