$22.88
2 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
The L.E. Wilson Neck Sizer Die Bushing .311 is the little steel insert that does the heavy lifting in a Wilson bushing-style neck sizing setup. It drops into a Wilson Neck Die or Wilson Bushing-Type Full-Length Sizing Die and sizes the outside of your case neck down to a nominal .311 inches, giving your loaded rounds a clean, repeatable grip on the bullet. The die body itself is sold separately, so this is the piece you add to fine-tune tension for a specific brass and bullet pairing.
The whole point of a bushing system is control. Instead of relying on a fixed neck diameter and a conventional expander ball dragging back through the neck, you pick a bushing that sizes the neck just enough to hold the bullet. That approach works the brass less, which helps with neck concentricity and stretches out the usable life of your cases. L.E. Wilson makes bushings in just about every practical thousandth, so you can land right where you need to for your particular load.
There are two common ways to land on the correct diameter. The quick method: measure the outside neck diameter of a loaded round with a good micrometer, then subtract .002 to .003 inches to account for brass spring-back and bullet tension. The second method is to measure your neck wall thickness, multiply by two, add your bullet diameter, then subtract that same .002 to .003. Either way gets you to the number stamped on the bushing you want.
This bushing is machined from steel and ground to tight tolerances, so it keeps its dimension through cycle after cycle of sizing. It interchanges freely across Wilson bushing-type neck dies, which means a handful of these in your reloading box lets you jump between cartridges or brass lots without buying a whole new die every time. For anyone chasing consistent seating and tighter groups, it's a small part that earns its keep on the bench.
The number tells you the diameter the bushing sizes your case neck down to, in this case a nominal .311 inches. L.E. Wilson names bushings by their size in thousandths of an inch, so the stamped number is the finished outside neck dimension. Pick the number that matches the tension you want for your brass and bullet combo.
The bushing is the insert only. You'll need an L.E. Wilson Neck Die or a Wilson Bushing-Type Full-Length Sizing Die to use it, and those die bodies are sold separately. Once you have a compatible die, this and any other Wilson bushings interchange freely in it.
Measure the outside neck diameter of a loaded round with a precision micrometer, then subtract .002 to .003 inches to allow for brass spring-back and bullet tension. Alternatively, measure neck wall thickness, multiply by two, add bullet diameter, then subtract that same .002 to .003. Both methods point you to the right bushing number.
A bushing sizes the outside of the neck and skips the conventional expander ball, so the brass gets worked less on every cycle. That helps keep neck concentricity tight and tends to prolong case life. It also lets you tune exactly how much tension you want rather than being locked into one fixed neck diameter.
| UPC | 815145025012 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | B-311 |
| Shipping Weight | 0.02 |
You must be logged in to post a review.
Reviews
There are no reviews yet.