When used with RCBS gold medal match series dies, these replaceable, self-centering neck bushings offer reloaders the precision needed to tailor bullet grip and reduce neck brass stress, thereby prolonging case life and boosting accuracy. To enjoy these advantages, high-grade brass with even neck thickness is a must. To find the correct bushing size, measure the loaded cartridge's outside neck diameter and subtract 0.002 - 0.003 inches or measure the case neck wall, double that number, add the bullet's diameter and subtract 0.001 inches. It's recommended to have bushings slightly above and below your target size to accommodate variances.

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