The L.E. Wilson Steel Neck Sizer Die Bushing .331 is a precision reloading component built for shooters who demand exacting control over neck tension. If you're working with a neck sizer die and need to fine-tune how snugly your cases hold bullets, or you're troubleshooting brass that's lost its grip after repeated firing, this hardened stainless steel bushing gives you the adjustment capability that generic dies simply don't offer.
L.E. Wilson manufactures their bushings in .001" increments, giving reloaders genuine flexibility in neck sizing. The marked diameter refers to the middle of the bushing, which is precision-reamed with a .003" taper. That design means you get two ways to adjust tension without buying multiple bushings: run it normally for standard sizing, or flip it over so the markings face the case to achieve a slightly tighter squeeze. It's a practical solution when hardened brass springs back more than expected, or when you need to dial in less squeeze than the next smaller bushing would provide.
Build quality mirrors Redding's approach to neck bushings, but L.E. Wilson bushings are not compatible with Forster or RCBS die systems—verify your die brand before ordering. Whether you're precision handloading for competition, hunting, or long-range shooting, this bushing lets you optimize brass life and bullet release without guesswork.
Key Features
- Hardened stainless steel construction for durability across thousands of reloading cycles
- Manufactured in .001" size increments for precise neck tension control
- Double-sided usability: flip the bushing for slightly tighter sizing without buying additional components
- .003" taper reamed into the middle section for consistent case neck control
- Compatible with L.E. Wilson and similar neck sizer die systems
Specifications
| Bushing Size | .331" |
| Material | Hardened stainless steel |
| Manufacturing Tolerance | .001" increments |
| Taper | .003" (reamed into middle) |
| Compatibility | L.E. Wilson neck sizer dies (not Forster or RCBS) |
Frequently Asked Questions
What die system does this bushing fit?
This L.E. Wilson bushing is designed for L.E. Wilson neck sizer dies. It will not work with Forster or RCBS neck sizer dies. Always confirm your die manufacturer before ordering.
How do I choose the right bushing size?
Measure the outside neck diameter of your loaded cartridge and subtract .002" to .003" to allow for roughly .001" of brass spring-back for proper neck tension. Alternatively, measure your case neck wall thickness, multiply by two, add your bullet diameter, and subtract .002" to .003". L.E. Wilson bushings in .001" increments let you dial in the exact size you need.
Can I adjust the bushing if my brass becomes work-hardened?
Yes. If your brass has hardened and springs back more than expected, you can flip the bushing over (markings facing down toward the case) to achieve a slightly tighter squeeze without purchasing a smaller size bushing. This is an effective fine-tuning option when standard orientation no longer holds bullets securely.
