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RCBS Steel Neck Bushings can be interchanged for reloading in order to select the right amount of tension on the bullet when using the RCBS Gold Medal Match sizing dies. This provides maximum accuracy while also reducing the work hardening of the case neck brass, which in turn increases the lifespan of the case.

These bushings are designed to self-center, thereby enabling proper alignment with the case neck. In order to obtain the best possible results, it is recommended to use high-end brass with consistent neck thicknesses.

RCBS Steel Neck Bushings come in the white, meaning that traditional case lubrication is required. These bushings are meant to be used ONLY with RCBS Gold Medal sizing dies.

For optimum performance, RCBS recommends having neck bushings one to two sizes above and below your target diameter. This guarantees extremely consistent and accurate ammunition when used with Gold Medal Match sizing dies.

Brownells Gun Tech™ Tip: To select the steel neck bushings you need, either measure the outside neck diameter of your loaded cartridge and subtract .002" to .003", or measure the neck wall thickness of your case, multiply by two, add the diameter of your bullet, and subtract .002" to .003".