L.E. Wilson Neck Sizing Bushing .333 (B-333) Hardened Steel

Description

The L.E. Wilson Neck Sizing Bushing .333 (part number B-333) is the small part that makes a big difference in a precision handloading setup. Rather than relying on a fixed neck diameter or an expander ball, you swap in a bushing sized to your exact brass and bullet combination and size only the outside of the case neck. That gives you direct control over neck tension, better concentricity, and less brass working with every cycle.

How the .333 Bushing Works in Your Press

This bushing drops into a Wilson Neck Die or a Wilson Bushing-Type Full-Length Sizing Die, which are sold separately. The .333 marking refers to the diameter at the middle of the bushing, which is reamed with a slight taper. Since the case neck only reaches that middle section, some reloaders flip the bushing over with the markings facing down to get a touch tighter sizing, which comes in handy if brass has work-hardened and started to spring back more than it used to.

Picking the Right Wilson Bushing Size

Getting the size right is the whole game here. The common approach is to measure the outside neck diameter of a loaded round where the bullet sits, then subtract .002 to .003 of an inch to land on your bushing number. You can also work it from neck wall thickness: multiply the wall thickness by two, add the bullet diameter, then subtract that same .002 to .003 for proper tension. Because Wilson makes these in .001 inch increments across nearly every practical size, a lot of handloaders keep several on hand to fine-tune for different bullets, brass lots, or conditions.

Made from hardened steel and ground to Wilson's established tolerances, the B-333 is built to hold up through years of use. Keep in mind these are made to similar specs as Redding bushings and will fit Redding dies, but they will not interchange with Forster or RCBS dies.