Forster 0.289" Bump Neck Sizing Die Bushing

Forster employs a super-cooling cryogenic process to produce ultra-smooth bushings, resulting in superior loaded rounds. Cryogenically treated steel generates filler particles that refine and seal the surface of the steel. The bushings undergo heat treatment and are honed to achieve the exact specified inside diameter. Forster neck size bushing bump inserts are specifically engineered for exclusive use with the Forster precision plus bushing bump die The bumpers are precision-engineered with 0.001 inches tolerances and undergo cryogenic treatment to enhance surface smoothness and durability