The RCBS 300 PRC Competition Full Length Bushing Die Set provides precision reloaders with professional-grade tools for creating accurate 300 PRC ammunition. This competition-level die set features interchangeable neck bushings for precise neck tension control.RCBS 300 PRC Competition Full Length Bushing Die SetFull length sizing with precision bushing systemInterchangeable bushings for custom neck tensionCompetition-grade construction for consistent resultsCompatible with 300 PRC cartridge casesTo determine proper bushing size measure the outside neck diameter of a loaded cartridge and subtract 0.002" to 0.003" to allow for brass spring back. Essential for competitive shooters and precision reloaders demanding consistent ammunition performance.