Compatible with RCBS gold medal match series dies, these changeable neck bushings center themselves automatically and allow for highly accurate neck tension adjustment, reducing neck brass fatigue and enhancing case longevity and bullet precision. Use only quality brass with uniform neck thickness to benefit. Select your bushing by measuring the loaded round's outside neck diameter and subtracting 0.002 - 0.003 inches or calculate by doubling the case neck wall, adding the bullet diameter, then subtracting 0.001 inches . RCBS recommends a range of bushings near your target size for optimal reloading flexibility.

• Proudly made in the USA for superior quality and reliability