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The L.E. Wilson Steel Neck Sizer Die Bushing in .252 is one of those small parts that makes a real difference once you start chasing consistency at the bench. Rather than relying on an expander ball to set neck tension, this bushing sizes the outside of the case neck directly. That means less brass working, better case life, and tighter control over how firmly the neck grips the bullet. It fits any Wilson bushing-type neck sizing die and interchanges freely, so swapping between loads or calibers is a matter of dropping in a different size.
Wilson machines these in .001 inch increments, which is why reloaders building precision ammo lean on them. The .252 marking refers to the inside diameter at the middle of the bushing, and the bore is cut with a slight taper. If you flip the bushing so the markings face down toward the case, you can squeeze out a touch more sizing, which comes in handy when brass work-hardens and starts springing back more than it used to.
The standard way to figure out which bushing you need is to measure the outside neck diameter of a loaded round, then subtract about .002 to .003 inch. That accounts for brass spring-back and leaves you with roughly .001 to .002 inch of grip on the bullet. If you prefer, you can measure your neck wall thickness, double it, and add your bullet diameter to land on the same number. Either way, the .252 slots into the lower end of Wilson's range.
Each bushing is made from hardened steel and goes through a multi-step grinding and polishing process to keep the bore true and consistent. L.E. Wilson has been a family-run shop since 1927, and these little bushings carry that reputation. They hold up through years of loading sessions, and the smooth bore helps keep neck sizing even all the way around. For anyone running a Wilson neck die on an arbor press, this is the component that turns a good setup into a repeatable one.
Measure the outside neck diameter of a loaded round with a caliper or micrometer, then subtract about .002 to .003 inch. That figure accounts for brass spring-back and leaves roughly .001 to .002 inch of grip on the bullet. If a loaded round in your caliber measures around .254 to .255 inch at the neck, the .252 is likely in the right window.
Yes. The .252 bushing interchanges freely across all L.E. Wilson bushing-type neck sizing dies, so you can drop it in and swap it out as needed. Keep in mind it is built to Wilson and similar specs and will not interchange with Forster or RCBS dies.
A bushing sizes the outside of the case neck directly, so you skip the expander ball pulling back through the inside. This works the brass less, which extends case life and gives you more precise, repeatable control over neck tension. It's a big reason precision and bolt-action reloaders favor the Wilson system.
You can. Since the bore is cut with a slight taper and the case neck only reaches the middle, flipping the bushing so the markings face down toward the case gives a slightly tighter size. It's mainly handy when brass has hardened and begun springing back, or for fine-tuning without jumping to the next smaller bushing.
| UPC | 815145024428 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | B-252 |
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