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The L.E. Wilson .285 Steel Neck Sizer Die Bushing is one of those small reloading pieces that makes a real difference once you start chasing consistency. Instead of relying on an expander ball to set your neck, this bushing sizes the outside of the case neck directly, which means less brass working, better concentricity, and neck tension you can actually control. Wilson has been building precision reloading tools for decades, and these bushings are machined from hardened steel, polished and precision ground for a smooth, accurate inside diameter.
The .285 refers to the inside diameter of the bushing, and that number is measured at the middle of the bore, which is reamed with a slight taper. Because the case neck only reaches the center of the bushing, you can flip it over with the markings facing down to get a touch more neck tension out of the same part. That little trick comes in handy when brass work hardens and starts springing back, or when you want to fine tune between two sizes without jumping a full thousandth.
Figuring out your size is straightforward. Measure the outside diameter of a loaded round at the neck, then subtract about .002 to .003 for proper bullet grip. You can also measure your neck wall thickness, multiply by two, add your bullet diameter, and subtract that same .002 to .003. Wilson offers these in .001 inch increments, so once you know your number you can nail it exactly and tweak from there during load development.
This bushing drops right into Wilson neck sizing dies and Wilson bushing-type full length sizing dies. It's also made to similar specs as Redding bushings, so it interchanges with Redding, RCBS, and Hornady bushing-style dies. One thing worth noting is that these will not fit Forster dies. A lot of handloaders actually prefer the Wilson bushings for the radius on the leading edge and the precise, repeatable inside diameter.
The .285 is the inside diameter of the bushing, measured at the middle of the bore. Wilson reams the bore with a slight taper, so the marked size reflects the center where your case neck sizes down. To pick the right one, measure a loaded round at the neck and subtract about .002 to .003 for proper bullet tension.
It fits L.E. Wilson neck sizing dies and Wilson bushing-type full length sizing dies. Because it's made to similar specs as Redding bushings, it also interchanges with Redding, RCBS, and Hornady bushing-style dies. It will not fit Forster dies.
Yes. Since the bore is tapered and the case neck only reaches the center, you can install the bushing with the markings facing down to get slightly more neck tension out of the same part. It's a handy move when your brass has work hardened and is springing back, or when you want to fine tune without stepping down a full size.
A bushing sizes the outside of the case neck directly, which reduces how much the brass gets worked and improves concentricity. That typically means longer brass life, more consistent neck tension, and better bullet seating. It's a popular setup for precision handloaders focused on repeatability.
| UPC | 815145024756 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | B-285 |
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