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RCBS Steel Neck Bushings are designed to be easily interchangeable, allowing the reloader to choose the perfect bushing for their needs. When used with RCBS Gold Medal Match sizing dies, the right-sized bushing can provide just the right amount of tension on the bullet. This precise fit helps reduce work hardening of the case neck brass, resulting in longer case life and improved accuracy.

The Steel Neck Bushings are self-centering, ensuring proper alignment with the case neck. For best results, high-end brass with consistent neck thicknesses is recommended. The bushings come bare steel (in-the-white), so traditional case lubrication is required. It's important to note that the bushings are only to be used with RCBS Gold Medal sizing dies.

RCBS recommends having one to two sizes above and below your target diameter. This is critical to creating extremely consistent-shooting ammo with your Gold Medal Match sizing dies.

Brownells Gun Tech™ Tip offers two ways to select the right steel neck bushings. The first way is to measure the outside neck diameter of your loaded cartridge and subtract .002" to .003". This leaves about .001" of brass for correct neck tension. The second way is to measure the neck wall thickness of your case, multiply by two, add the diameter of your bullet, and subtract .002" to .003".