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Neck tension is one of those little details that separates good handloads from great ones, and this .330 bushing from L.E. Wilson gives you a simple way to control it. Machined from hardened steel to tight tolerances, it sizes the outside of your case neck instead of relying on an expander ball, which means less brass working and more consistent seating from round to round. It drops right into Wilson bushing-type neck sizing dies and the Wilson Bushing Type Full Length Sizing Die, and because the industry uses a universal bushing standard, it'll also run in Redding, Whidden, and other common bushing dies.
The whole idea here is tuning how firmly your case neck grips the bullet. Wilson makes these in .001 inch increments so you can get the exact fit your brass and bullet combo calls for. To pick the right size, measure the outside neck diameter of a loaded round and subtract .002 to .003 inch. That leaves you with roughly a thousandth of grip after the brass springs back, which is the sweet spot most precision reloaders are chasing.
One handy feature of the Wilson design is the taper. The size marked on the bushing refers to the middle, which is reamed with a slight taper, so if you flip the bushing over with the markings facing down toward the case, you can squeeze out a touch more sizing. It's a free way to fine-tune without buying another bushing. These are the same bushings precision and bench shooters have trusted for years, built by a company with roots going back decades in the reloading world.
Bottom line, if you're running a bushing-style die and want repeatable neck tension without overworking your brass, the .330 steel bushing is the piece that makes it happen. Just confirm your loaded neck measurement before ordering so you land on the right diameter for your rifle.
Measure the outside neck diameter of a loaded cartridge with a precision caliper or micrometer, then subtract .002 to .003 inch. If that math lands you at .330, this is your bushing. That spread accounts for brass springback and leaves about a thousandth of grip on the bullet.
Yes. Bushings follow a universal size standard across the industry, so Wilson, Redding, Whidden, and RCBS bushings are interchangeable in bushing-type dies. Plenty of reloaders run Wilson bushings in Redding dies with no issues at all.
No, and that's the point of a bushing system. The bushing sizes the outside of the neck directly, so you skip the expander ball and the extra brass working that comes with it. That generally means longer case life and more consistent neck tension.
The size stamped on the bushing refers to the middle, which is reamed with a slight taper. Since the case neck only reaches that midpoint, turning the bushing so the markings face down toward the case gives you a touch tighter sizing. It's a simple way to fine-tune neck tension without buying another bushing.
| UPC | 815145025203 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | B-330 |
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