L.E. Wilson .250 Steel Neck Sizer Die Bushing (B-250)

Description

This is the L.E. Wilson .250 steel neck sizing bushing, part number B-250, a single precision-ground bushing that handles one of the most important jobs in precision reloading: setting your neck tension exactly where you want it. Rather than oversizing and then expanding the neck back out, a bushing sizes the outside of the case neck to a specific diameter, which means less brass working, less runout, and a more consistent grip on the bullet.

L.E. Wilson has been building precision reloading tools for decades, and these bushings carry that reputation. Each one is machined from hardened, polished steel with a smooth bore that reduces sizing friction as the neck passes through. Steel bushings like this one do benefit from a touch of case lube on the neck, which keeps things moving smoothly and protects the surface over thousands of rounds.

Picking the Right .250 Wilson Neck Bushing

Sizing a bushing is simple once you know the trick. Measure the outside diameter of a loaded round right where the bullet sits in the neck, then subtract about .002 for a bolt gun or .003 for a semi-auto to land on your target bushing. The .250 measurement refers to that finished neck diameter, so this one fits reloaders whose loaded-round math works out around a quarter inch. It is always smart to have a couple of neighboring sizes on hand so you can tune tension to your specific brass and brass thickness.

Where the B-250 Bushing Fits

One of the best things about Wilson bushings is their versatility. This .250 bushing is built to the common 1/2 inch O.D. by 3/8 inch length standard, so it drops into Wilson bushing-style neck and full-length dies, and it also works in Redding, RCBS, and Hornady bushing dies. It will not fit Forster dies. If you shoot multiple cartridges or chase load development across different brass lots, a small collection of these bushings gives you a lot of flexibility without buying whole new dies.