RCBS Part Number 23908 corresponds to the MatchMaster Competition Full Length Bushing Die Set for the 25 A- 47 Lapua cartridge. This premium 2-die set is explicitly designed for precision reloaders and requires interchangeable neck bushings (sold separately). Precision Match Sizing: Allows for precise, concentric neck tension adjustments to optimize bullet fit. MatchMaster Seater Die: Features an ultra-convenient bullet seating window and a micrometer-adjustable, free-floating, self-centering seating stem.