The L.E. Wilson Steel Neck Sizer Die Bushing .325 is a hardened stainless steel neck sizing component for reloaders who demand precision and control over case neck tension. Unlike generic sizing dies that can crush neck diameter inconsistently, neck bushings let you fine-tune how snugly your cases grip the bullet—critical for accuracy-focused handloaders working with bottleneck rifle cartridges. Wilson manufactures these bushings in .001" increments, so you get the exact sizing diameter your ammunition needs without settling for the nearest standard die size.
The .325 marking on this bushing refers to the middle section, which is reamed with a .003" taper. That geometry matters: since the case neck only contacts the middle of the bushing, you can flip it over and use it with markings facing down to achieve slightly tighter sizing—a useful technique for hardened brass that's starting to spring back or when you want finer control than stepping down to the next smaller bushing. This reversible design gives you two effective sizing options from one bushing, a practical advantage on the reloading bench.
L.E. Wilson bushings are built to specs comparable to Redding neck bushings, so they're recognized as a serious tool for match-grade and hunting ammunition. Keep in mind they're not compatible with Forster or RCBS dies—you'll need an L.E. Wilson neck sizer die to use them. If you're stepping up from a universal sizing die or trying to tighten up your neck tension consistency, this bushing gives you the precision and flexibility that separates careful handloaders from casual ones.
Key Features
- Hardened stainless steel construction for durability and precision
- Manufactured in .001" size increments for exact neck diameter control
- .003" taper design allows reversible use for two sizing options
- Comparable specs to Redding neck bushings for quality assurance
- Enables fine-tuning of case neck tension for improved accuracy
Specifications
| Material | Hardened stainless steel |
| Size Marking | .325" |
| Bushing Middle Diameter | .325" |
| Taper | .003" |
| Sizing Increment | .001" |
| Compatibility | L.E. Wilson neck sizer dies only |
Frequently Asked Questions
What L.E. Wilson dies will this bushing work with?
This bushing is designed for L.E. Wilson neck sizer dies. It is not compatible with Forster or RCBS dies.
How do I choose the right bushing size for my cartridge?
Measure the outside neck diameter of a loaded round and subtract .002" to .003" to account 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". The .325 marking on this bushing refers to the middle section where sizing occurs.
Can I use this bushing in two different ways?
Yes. Normally the bushing is used with markings facing up. You can flip it over—markings facing down toward the case—to achieve slightly tighter sizing. This reversible feature is useful for hardened brass that springs back more or when you want finer neck tension control without stepping to the next smaller bushing size.
What does the .003" taper mean for my sizing results?
The taper is reamed into the middle section of the bushing where the case neck actually contacts the steel. This tapered design is what allows you to flip the bushing for two effective sizing options and contributes to the consistent, controlled neck sizing this style of bushing is known for.
