RCBS Steel Neck Bushings provide precise bullet tension with RCBS Gold Medal Match sizing dies, improving accuracy and extending case life.
Bushings should be self-centered and come in bare steel, requiring lubrication, and it's recommended to have a range of sizes for optimal fit.
To select the correct bushing size, subtract .002"-.003" from the loaded cartridge's outside neck diameter or calculate using case neck wall thickness and bullet diameter.