These had-polished bushing style dies are a little different than traditional neck style bushing dies or full-length style bushing dies. Forster's Precision Bushing Bump Dies size the case neck and adjust the headspace length without sizing the body of the case. Includes a decapping assembly without an expander ball so your bushing selection determines the internal neck diameter.
This die is only compatible with Forster bushings - does not work with Redding or Wilson bushings. When selecting a bushing size, choose a bushing approximately .002 inch smaller than a loaded round measures at the case neck. Bushings are available in increments of .001 inch. Bushings must be purchased separately.
Sinclair, Issue:4B, Page:046