RCBS Steel Neck Bushings provide precise bullet tension with RCBS Gold Medal Match sizing dies, improving accuracy and prolonging case life.
Bushings should be self-centered and used with high-quality brass for best results; they require traditional lubrication as they come "in-the-white".
To select the correct bushing size, subtract .002"-.003" from the loaded cartridge's outside neck diameter or calculate using case neck wall thickness plus bullet diameter minus .002"-.003".