Forster .4025" Inside Neck Reamer

A Forster inside neck reamer at .4025 inch. Neck reaming removes brass from the inside wall of a case neck, the step handloaders use on cases formed from another cartridge or on necks that have thickened after repeated firings.

Reaming is a size specific job, so the number on this tool is the spec that matters: .4025 inch. Check the reamer against the case holder and trimmer already on your bench before ordering. If the neck walls are uneven rather than simply thick, outside neck turning is the other way at the same problem.