The RCBS X Die Small Base Die Set is designed for resizing .308 Winchester / 7.62 NATO bottleneck cases while minimizing the need for repeated trimming. Its patented mandrel incorporates an expander ball and decapping pin to control case neck behavior during sizing. After an initial trim of .020 inch off the maximum length, the X Die is intended to reduce subsequent trimming requirements.
Key Specifications
- The manufacturer is RCBS.
- The cartridge compatibility is .308 / 7.62 NATO.
- The die style is Small Base Dies.
- The mandrel includes an expander ball and a decapping pin.
- The manufacturer recommends an initial trim of .020 inch off maximum case length.
- The patented design is intended to eliminate the need for repeated trimming after the initial trim.
- The X Die is designed so the mandrel does not shorten case length during normal sizing.
- The close tolerance between the mandrel and die neck wall is intended to prevent the thickening of the neck wall.
- Cases sized repeatedly with the X Die will initially grow a few thousandths of an inch and then stabilize below maximum case length.
- RCBS recommends ordering the X Die Small Base Set containing the X Die Small Base Sizer and Standard Seater Die for those starting to reload the caliber.
The RCBS X Die Small Base Die Set is a practical choice for reloaders seeking consistent case dimensions with reduced trimming frequency. Its engineered mandrel and close tolerances focus on maintaining case length and neck condition through repeated sizing cycles, making it well suited for precision reloaders who value efficient, repeatable case preparation.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.




