Hornady .243 Bushing/Caliber Insert for Match Grade Sizing Die

Hornady .243 bushing/caliber insert for match grade resizing die
Caliber insert for match grade full-length or neck resizing die.

Made of hardened steel (identical to Redding and RCBS).

Procedure for selecting the appropriate insert:
Measure the neck diameter of a finished cartridge and subtract 0.002"-0.003" from that measurement (thickness of the case material). This should then yield a measurement with which you can find a suitable bushing.