RCBS200190896
RCBS X Die Small Base Sizer Die Only .308 Win$65.11
Availability: In Stock
The RCBS X Die Small Base Set for .308 Win gives reloaders an efficient way to size and seat rounds without the constant trimming that plagues most bottleneck cartridge work. This two-die set pairs the X Die Small Base Sizer with a Standard Seater Die, making it ideal for handloaders who are setting up .308 Winchester for the first time or transitioning to a more streamlined process. The X Die's patented design cuts case mouth growth during sizing, so after an initial trim of .020 inch off maximum length to standardize your brass, you're largely done with the trimming treadmill.
What makes the X Die different is its specially engineered mandrel, which combines an expander ball and decapping pin in one component. As cases move through the die neck, the mandrel's extremely close tolerances prevent the case mouth from deforming the neck walls the way traditional sizing does. Your cases will grow a few thousandths initially, then stabilize well below maximum length and stay there—no discernible loss of accuracy or case life. This means you spend less time at the trimmer and more time at the range.
The Small Base sizing improves consistency for .308 ammunition by reducing case dimensions slightly beyond standard specs, which tightens chamber fit and can help with reliable feeding and consistency. Whether you're loading for a bolt gun, AR-platform rifle, or precision target work, this set removes a major friction point from your reloading routine. RCBS dies are manufactured to strict tolerances and backed by decades of reloading reliability.
| Caliber | .308 Winchester |
| Set Contents | X Die Small Base Sizer, Standard Seater Die |
| Manufacturer | RCBS |
| Type | Two-Die Rifle Reloading Set |
Yes. The RCBS X Die Small Base Set includes the X Die Small Base Sizer and Standard Seater Die—the two essential dies for full-length sizing and seating .308 rounds. You'll still need a press, shell holder, scales, calipers, and other reloading accessories, but this set covers the die requirements to get started.
After an initial trim of .020 inch off maximum case length to standardize your brass, the X Die's mandrel design prevents the case mouth growth that normally forces repeated trimming. Cases will grow slightly at first, then stabilize well below maximum length and remain there through multiple reloading cycles. Most reloaders find they can go years without needing to trim again.
The X Die's patented mandrel has an extremely close tolerance to the die neck wall, which prevents the case mouth from thickening as the case is sized. A standard die typically allows the case mouth to contact and deform the mandrel, which causes the case to grow and eventually exceed maximum length, requiring trimming. The X Die eliminates this problem.
The Small Base sizing is designed to produce ammunition with slightly reduced dimensions for improved chamber fit and feeding consistency. It works in standard .308 Winchester chambers, but check your specific rifle's requirements if you have an unusual or tight chamber before committing a large batch of brass.
SKU: 167526277 • Width: 4.45in • Height: 1.75in • Depth: 6in • Weight: 1.2oz
Availability: In Stock
The RCBS X Die Small Base Set for .308 Win gives reloaders an efficient way to size and seat rounds without the constant trimming that plagues most bottleneck cartridge work. This two-die set pairs the X Die Small Base Sizer with a Standard Seater Die, making it ideal for handloaders who are setting up .308 Winchester for the first time or transitioning to a more streamlined process. The X Die's patented design cuts case mouth growth during sizing, so after an initial trim of .020 inch off maximum length to standardize your brass, you're largely done with the trimming treadmill.
What makes the X Die different is its specially engineered mandrel, which combines an expander ball and decapping pin in one component. As cases move through the die neck, the mandrel's extremely close tolerances prevent the case mouth from deforming the neck walls the way traditional sizing does. Your cases will grow a few thousandths initially, then stabilize well below maximum length and stay there—no discernible loss of accuracy or case life. This means you spend less time at the trimmer and more time at the range.
The Small Base sizing improves consistency for .308 ammunition by reducing case dimensions slightly beyond standard specs, which tightens chamber fit and can help with reliable feeding and consistency. Whether you're loading for a bolt gun, AR-platform rifle, or precision target work, this set removes a major friction point from your reloading routine. RCBS dies are manufactured to strict tolerances and backed by decades of reloading reliability.
| Caliber | .308 Winchester |
| Set Contents | X Die Small Base Sizer, Standard Seater Die |
| Manufacturer | RCBS |
| Type | Two-Die Rifle Reloading Set |
Yes. The RCBS X Die Small Base Set includes the X Die Small Base Sizer and Standard Seater Die—the two essential dies for full-length sizing and seating .308 rounds. You'll still need a press, shell holder, scales, calipers, and other reloading accessories, but this set covers the die requirements to get started.
After an initial trim of .020 inch off maximum case length to standardize your brass, the X Die's mandrel design prevents the case mouth growth that normally forces repeated trimming. Cases will grow slightly at first, then stabilize well below maximum length and remain there through multiple reloading cycles. Most reloaders find they can go years without needing to trim again.
The X Die's patented mandrel has an extremely close tolerance to the die neck wall, which prevents the case mouth from thickening as the case is sized. A standard die typically allows the case mouth to contact and deform the mandrel, which causes the case to grow and eventually exceed maximum length, requiring trimming. The X Die eliminates this problem.
The Small Base sizing is designed to produce ammunition with slightly reduced dimensions for improved chamber fit and feeding consistency. It works in standard .308 Winchester chambers, but check your specific rifle's requirements if you have an unusual or tight chamber before committing a large batch of brass.
SKU: 167526277 • Width: 4.45in • Height: 1.75in • Depth: 6in • Weight: 1.2oz