RCBS Steel Neck Bushings provide precise bullet tension using RCBS Gold Medal Match sizing dies, enhancing accuracy and extending case life.
Bushings require traditional case lubrication and should be self-centered to align properly with case necks; high-end brass with consistent neck thickness is recommended.
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".