The L.E. Wilson Steel Neck Sizer Die Bushing .251 is a hardened stainless steel sizing component for reloaders who want precision control over neck tension. Built to comparable specifications to Redding neck bushings, Wilson's steel bushings come in .001" increments, giving you fine control over how snugly your brass grips the bullet. This .251 bushing is sized for use with L.E. Wilson neck sizing dies and works best for handloaders focused on consistent, repeatable ammunition that chambers smoothly and shoots tight groups.
Neck sizing is where much of reloading's precision lives. Too much squeeze and you're inducing unnecessary stress; too little and you lose the tension needed for reliable ignition and consistency. The Wilson bushing gives you the ability to tune that fit to your brass, your bullet, and your rifle—something you can't do with one-size-fits-all sizing methods. The .251 size is marked on the bushing itself, referring to the middle diameter, which is reamed with a .003" taper. This design lets you flip the bushing if you need a slightly tighter fit for work-hardened brass or fine-tuning, though that's an emergency measure rather than a regular practice.
Keep in mind that Wilson bushings are caliber and die-specific; they will not interchange with Forster or RCBS dies. If you're running an L.E. Wilson neck sizer and need to dial in your neck tension, this is the tool to do it. Selecting the right bushing size depends on measuring your loaded round's neck diameter and subtracting .002" to .003" (to allow brass spring-back), or by calculating it from your case wall thickness, bullet diameter, and desired clearance.
Key Features
- Hardened stainless steel construction for durability
- Available in .001" size increments for precision tuning
- Compatible with L.E. Wilson neck sizing dies
- Tapered .003" design allows flipping for emergency tighter sizing on hardened brass
- Comparable specifications to Redding neck bushings
Specifications
| Brand | L.E. Wilson |
| Product Type | Steel Neck Sizer Die Bushing |
| Size | .251" |
| Material | Hardened Stainless Steel |
| Taper | .003" |
| Size Increment | .001" |
Frequently Asked Questions
Will this bushing work with Forster or RCBS dies?
No. L.E. Wilson neck bushings are not compatible with Forrest or RCBS neck sizing dies. They are designed exclusively for use with L.E. Wilson neck sizer dies.
How do I determine the correct bushing size for my cartridge?
You have two methods: (1) Measure the outside neck diameter of a loaded round and subtract .002" to .003" to allow approximately .001" of brass spring-back. (2) Alternatively, measure your case neck wall thickness, multiply by two, add your bullet diameter, and subtract .002" to .003". Both approaches account for normal brass spring-back and proper neck tension.
Can I flip the bushing over for a tighter fit?
Yes, you can turn the bushing so the markings face down (toward the case) to achieve a slightly tighter sizing fit. However, this is intended only as a temporary measure if your brass has work-hardened and sprung back excessively, or for fine-tuning when you need less squeeze than the next smaller bushing would provide.
What makes these bushings different from one-piece dies?
The bushing system lets you adjust neck tension without changing dies, giving you precision control over how the brass grips the bullet. This is especially valuable for match-grade reloading or when you're working with different brass that may have different wall thickness.
