RCBS .347" Steel Neck Sizing Bushing

An RCBS steel neck sizing bushing measuring .347 inch. Neck bushings are the kind of bench hardware a loader owns several of: one for new brass, one for necks that have thickened, one for a different bullet.

Each bushing produces one finished neck diameter, and the way to choose is to measure the neck of a loaded round and subtract the tension you want. That puts you on a specific number rather than on a cartridge name, which is how bushings are sold and stocked. Material here is steel. Check the size and style your die accepts first.