The RCBS MatchMaster Competition Seating Die (25 Creedmoor Part #23740) is an elite micrometer-adjustable bullet seating die designed for precision handloading. Exclusive Bullet Loading Window:...
The RCBS 10140 corresponds to the MatchMaster Competition Seating Die for the .22 Creedmoor cartridge. As part of RCBS’s premium die line this specific SKU (10140) features a micrometer adjustment...
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.