These self-aligning neck bushings are designed specifically for RCBS gold medal match series reloading dies, providing reloaders the ability to dial in bullet tension for each load, which decreases the amount of brass stress on the neck, prolongs case life and improves accuracy. To make use of this system effectively, you must use premium brass with consistent neck thickness. Ideal bushing size can be determined either by subtracting 0.002 - 0.003 inches from the loaded round's neck diameter or by calculating - (2 x neck wall thickness) + bullet diameter - 0.001 inches. Having neck bushings one or two sizes above and below your target ensures flexibility.

• Proudly made in the USA for superior quality and reliability