RCBS MatchMaster Full-Length Bushing Die Set .300 Win Mag - 15308

This RCBS MatchMaster full-length bushing die set is designed for precision reloading of .300 Win Mag cartridges. The set includes two dies and features bushing-style neck sizing for consistent case preparation. Proper neck bushing selection requires measuring loaded cartridge neck diameter and subtracting 0.002" to 0.003" to account for brass spring back.