RCBS MatchMaster Neck Size Bushing Die Set .22 Creedmoor
RCBS MatchMaster Neck Size Bushing Die Set .22 Creedmoor, Sizing dies require the purchase of appropriate neck bushings for the caliber you are loading. To determine the proper neck bushing size, measure the outside neck diameter of a loaded cartridge and subtract .002" to .003" to allow for a small amount of brass spring back.