RCBS 0.265" Neck Bushing

Optimized for the RCBS gold medal match series, these self-centering neck bushings enable users to achieve the perfect neck tension on each round, which reduces brass work hardening and leads to longer-lasting cases and tighter groupings. Their effectiveness depends on using brass with uniform neck wall thickness. The ideal bushing size can be found by measuring a loaded cartridge's outside neck diameter and subtracting 0.002 - 0.003 inches or by doubling the neck wall thickness, adding the bullet diameter and subtracting 0.001 inches. RCBS advises reloaders to own bushings slightly above and below the calculated diameter. Proudly made in the USA for superior quality and reliability