The L.E. Wilson Steel Neck Sizer Die Bushing .250 is a precision reloading component for handloaders who demand tight, consistent neck tension. This hardened stainless steel bushing works with L.E. Wilson neck-sizing dies to control how much your case neck hugs the bullet—a critical detail for accuracy and consistent velocities. If you're fine-tuning loads or working with brass that's hardened after multiple reloadings, this bushing gives you control that off-the-shelf sizing dies simply don't.
Wilson manufactures their bushings in .001" increments, and the marked diameter refers to the middle of the bushing, which is reamed with a .003" taper. This design is key: since the case neck only reaches the bushing's middle, you can flip the bushing to face the markings toward the case (markings down) to achieve slightly tighter sizing. That's useful when fired brass has hardened and springs back more aggressively than new brass, or when you're chasing minimal neck squeeze. Most of the time you'll use the bushing marked side up in the normal way, but that reversible feature is there when you need it.
Selection is straightforward. Measure your loaded cartridge's outside neck diameter and subtract .002" to .003"—that margin lets the brass spring back naturally for proper neck tension. Alternatively, measure neck wall thickness, double it, add bullet diameter, and subtract .002" to .003". A .250 bushing is designed to suit .250-caliber necks within that calculation.
Note: these bushings are made to specs similar to Redding equivalents but will not work with Forster or RCBS dies. They're built for dedicated Wilson neck-sizing dies, so confirm your die compatibility before ordering.
Key Features
- Hardened stainless steel construction for durability and precision
- Reversible design: flip to reduce neck squeeze when brass hardens or for fine-tuning
- .003" taper reamed into the bushing for controlled sizing
- Works with L.E. Wilson neck-sizing dies only
- Manufactured in .001" increments for tight tolerance matching
Specifications
| Brand | L.E. Wilson |
| Product Type | Steel Neck Sizer Die Bushing |
| Bushing Size | .250" |
| Material | Hardened Stainless Steel |
| Taper | .003" |
| Manufacturing Tolerance | .001" increments |
| Compatible Dies | L.E. Wilson neck-sizing dies only |
Frequently Asked Questions
What size bushing do I need for my caliber?
Measure the outside diameter of your loaded cartridge and subtract .002" to .003" to allow for brass spring-back and proper neck tension. Alternatively, measure your case neck wall thickness, multiply by two, add your bullet diameter, and subtract .002" to .003". A .250 bushing is sized for .250-caliber necks using those calculations.
Can I use this bushing with my Forster or RCBS neck-sizing die?
No. L.E. Wilson bushings are not compatible with Forster or RCBS dies. They are designed exclusively for L.E. Wilson neck-sizing dies. Confirm your die manufacturer before purchasing.
How do I use the reversible bushing feature?
Normally, install the bushing marked side up in your die. If your brass has hardened and springs back excessively, or if you want to fine-tune neck squeeze downward, flip the bushing so the markings face the case (markings down). This achieves slightly tighter sizing without switching to the next smaller bushing size.
Is this bushing similar to Redding bushings?
The L.E. Wilson bushings are made to similar specifications as Redding neck bushings, but they are not interchangeable. Use only with compatible L.E. Wilson dies.
