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The L.E. Wilson Neck Sizer Die Bushing .266 is the interchangeable insert that sets how tightly your case neck grips the bullet. It drops into a Wilson Neck Die or a Wilson Bushing Type Full Length Sizing Die and sizes the outside of the case neck to .266 inches, giving you direct control over neck tension instead of leaving it up to a one-size-fits-all expander ball. For anyone chasing tighter groups, that control is where consistency starts.
Neck tension is one of those variables that separates good handloads from great ones, and a bushing like this is how you tune it. Because the neck is sized from the outside to a known diameter, you get repeatable grip round after round. Running a bushing instead of a conventional expander ball also keeps the brass from being stretched and dragged back on every cycle, which helps concentricity and stretches out the usable life of your cases. That is a big deal for precision and benchrest loaders who want every round to behave the same.
Figuring out which bushing you need is straightforward. Measure the outside diameter of a loaded round where the bullet sits in the neck, then subtract .002 to .003 inches from that number. Brass springs back slightly after sizing, so that math typically leaves you with about .001 to .002 inches of grip on the bullet. You can also work it from your neck wall thickness by doubling it, adding your bullet diameter, then subtracting .002 to .003. The .266 covers you when your measurement lands in that range.
Machined from steel and made in the U.S.A., this bushing is built to keep its dimension through plenty of sizing cycles. It interchanges freely across Wilson bushing-type neck sizing dies, so once you have a few on hand you can jump between cartridges or brass lots and fine-tune tension without buying a whole new die. The die body and any press or arbor setup are separate from the bushing itself, so this is the piece you add to tailor your setup to your exact load.
The number is the finished diameter the bushing sizes the outside of your case neck to, in this case .266 inches. Wilson follows a straightforward thousandths-of-an-inch naming system across their bushing lineup. Pick the number that matches your target neck diameter after allowing for bullet grip.
Measure the outside diameter of a loaded round where the bullet sits in the neck, then subtract .002 to .003 inches. If that lands you near .266, this is your bushing. You can also double your neck wall thickness, add your bullet diameter, and subtract .002 to .003 to get there.
Yes. It interchanges freely in Wilson bushing-type neck sizing dies and the Wilson Bushing Type Full Length Sizing Die. The die body is sold separately, so this bushing is the piece you add to set your neck tension.
A bushing sizes the neck from the outside to a known diameter, giving you precise, repeatable neck tension. It also avoids the stretching and pull-back of a conventional expander, which improves concentricity and helps your brass last longer. That consistency is a big reason precision and benchrest loaders run them.
| UPC | 815145024565 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | B-266 |
| Shipping Weight | 0.02 |
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