Description
- Designed specifically for new brass preparation
- Expands neck to slightly under bullet diameter
- Interchangeable mandrels depending on caliber
- Stainless steel construction for long-lasting performance
- Compatible with standard 7/8-14 reloading presses when used with the mandrel die
- L.E. Wilson manufactured lock nut for repeatable setup
These are Wilson Expanding Mandrels Only are designed to be used with the Wilson Expanding Mandrel Die to precisely set neck diameter on new brass cases. Over recent years, many reloaders have found that new brass often arrives with inconsistent or damaged necks due to bulk shipping.
Running new cases over an expanding mandrel before first firing helps establish uniform neck tension, which directly supports consistent bullet seating depth and improved accuracy. These mandrels expand the neck to a controlled diameter slightly under bullet size without overworking the brass.
Manufactured from stainless steel for long service life, Wilson Expanding Mandrels are interchangeable by caliber and allow reloaders to fine-tune neck tension based on their specific load requirements.
