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This is the L.E. Wilson .332 steel neck sizing bushing, part number B-332, the little piece that quietly does a lot of the heavy lifting in a precision reloading setup. It sizes the outside of your case neck to a specific diameter so you get just the right amount of grip on the bullet, no more and no less. Instead of relying on an expander ball dragging back through the neck, you simply pick the bushing that matches your brass and bullet combo and let it do the work. Less brass gets worked, concentricity stays tight, and your cases tend to last longer.
The size stamped on the bushing refers to the finished neck diameter. The quickest way to figure out what you need is to measure the outside neck diameter of a loaded round and subtract .002 to .003 inch. That leaves room for a touch of brass spring-back so you end up with roughly .001 to .002 of real bullet grip. You can also measure your neck wall thickness, double it, add the bullet diameter, then subtract that same .002 to .003. Wilson makes these in .001 inch increments, so dialing in your exact tension is just a matter of grabbing the next size up or down.
This one is machined from hardened stainless steel, which shrugs off corrosion and wear a lot better than plain steel bushings. It drops freely into Wilson neck sizing dies and Wilson bushing-type full length sizing dies, and it's built to similar specs as Redding neck bushings. There's a handy trick worth knowing too: the inside is reamed with a slight taper, so flipping the bushing over with the markings facing down gives you a hair more neck tension from the same bushing. That's a nice option when your brass has work-hardened a bit and isn't holding bullets like it used to.
Most folks running bushing dies keep several sizes on hand so they can fine-tune for different bullets, brass lots, or seasonal conditions. If you're chasing consistent neck tension and repeatable seating, the .332 is a solid addition to the lineup.
Measure the outside neck diameter of a loaded round with a micrometer, then subtract .002 to .003 inch. If that number lands at .332, this is your bushing. You can also measure your neck wall thickness, multiply by two, add your bullet diameter, and subtract the same .002 to .003.
It drops freely into L.E. Wilson neck sizing dies and Wilson bushing-type full length sizing dies. It's made to similar specs as Redding neck bushings, so it will work in those as well. It is not designed to interchange with Forster or RCBS dies.
Yes. The inside is reamed with a slight taper, so flipping the bushing over with the markings facing down toward the case gives you a touch more grip. That's a useful trick when your brass has work-hardened and isn't holding bullets as firmly as it should.
Generally no. A big reason to run a bushing system is to size the neck without an expander ball dragging back through it, which reduces brass working and helps with concentricity. Many precision handloaders rely on bushing sizing alone, especially with brass that has uniform neck wall thickness.
| UPC | 815145025227 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | B-332 |
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