RCBS MatchMaster Duo Features The RCBS MatchMaster Duo pairs two purpose-built dies into a single precision reloading set for the .338 Lapua Magnum cartridge. The MatchMaster Seating Die uses a micrometer adjustable design letting handloaders dial in and repeat an exact seating depth shot after shot which is critical for extracting maximum accuracy from a long-range cartridge like .338 Lapua. Because the seating die s adjustments are repeatable a reloader can return to a proven load recipe without re-measuring from scratch every session. This level of control appeals directly to precision shooters who treat their handloads as seriously as their rifle setup. Paired with the MatchMaster Seating Die is a rugged RCBS Full-Length Sizing Die that requires no bushings simplifying the sizing process while still delivering the consistent case dimensions that full-length sizing is known for. Combining full-length sizing with a micrometer seating die in one set means handloaders get both proven case prep and elite-level seating precision without piecing together components from different die lines. RCBS backs the MatchMaster Duo with a limited lifetime warranty and manufactures the set in the USA reflecting the company s reputation built over generations of reloading equipment. For handloaders who want match-ready consistency straight out of the box the RCBS MatchMaster Duo Set is available for sale at GrabAGun. RCBS MatchMaster Duo Specifications Manufacturer: RCBS Model: MatchMaster Duo Caliber: .338 Lapua Mag Die Series: Full Length Die Type: Seating Die Pieces in Set: 2 Available At: GrabAGun