Heat-Treated Steel Neck Sizing Bushing

Available sizes .395" .396" .397" .398" .399" .400" .401" .402" Neck Sizing Bushings (Heat Treated Steel) Instructions Redding Neck Sizing Bushings fit all Redding Bushing Dies and interchange with Wilson style bushings. Available in .001” increments from 17 thru 338 calibers. Steel bushings are heat treated to approx. Rc 60-62 and hand polished to reduce sizing effort. Lubrication is recommended. Determining Bushing Size The proper bushing size can be easily determined by measuring the outside neck diameter of your loaded cartridges with a precision micrometer. From this measurement, subtract .002”. This allows for brass spring back. Learn more