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The L.E. Wilson .288 steel neck sizer bushing is the interchangeable insert that lets you control exactly how much your case necks get sized. It drops into a Wilson bushing-style neck die or bushing full-length sizing die and works the outside of the neck down to a .288 finished diameter, which means you get repeatable neck tension without leaning on a traditional expander ball. For handloaders chasing tight groups, that kind of control is where consistency starts.
By swapping bushings, you can fine-tune bullet grip for different brass lots, bullet types, or loads without buying a whole new die. Sizing only the outside of the neck means you work the brass less, which tends to stretch out case life and keep things concentric. Wilson makes these in .001 inch increments, so you can get pretty surgical about where your neck tension lands.
One thing that sets Wilson bushings apart is the .003 inch taper reamed into them. The size marked on the bushing refers to the middle, where the case neck reaches. Flip the bushing over so the numbers face down into the die and you get a slightly tighter squeeze from the same bushing. That comes in handy if your brass has work-hardened and started springing back more, or when you want a touch more grip than the next full size down would give you.
The easiest method is to measure the outside neck diameter of a loaded round where the bullet sits, then subtract .002 to .003 inch. That accounts for brass spring-back and leaves you with roughly .001 to .002 inch of tension. You can also measure neck wall thickness, multiply by two, add your bullet diameter, then subtract that same .002 to .003. Keep in mind different brass brands run different wall thicknesses, so a bushing that's spot-on for one headstamp may need adjusting for another. These are steel bushings, so a little neck lube goes a long way.
The simplest way is to measure the outside diameter of a loaded round at the neck where the bullet sits, then subtract .002 to .003 inch. That leaves about .001 to .002 inch of neck tension after the brass springs back. You can also measure neck wall thickness, double it, add your bullet diameter, then subtract that same .002 to .003 inch.
Wilson bushings share the universal bushing standard, so they interchange with Redding, Whidden, RCBS, and Hornady bushing-style dies. They will not fit Forster dies, which use their own tapered bushing design. If you run a Wilson neck die or bushing full-length die, you're all set.
The .288 marking refers to the middle of the bushing, which is reamed with a .003 inch taper. If you flip the bushing so the numbers face down into the die, you get a slightly tighter squeeze from the same bushing. It's a handy fine-tuning move when brass has hardened and springs back more, or when you want a touch more grip without jumping to the next size down.
Yes. These are steel bushings, so a light coat of neck lube on the outside of your case necks makes sizing smoother and easier on both the brass and the die. Going dry with steel bushings just adds unnecessary drag.
| UPC | 815145024787 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | B-288 |
| Shipping Weight | 0.02 |
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