The L.E. Wilson .307 Inch Steel Neck Sizing Die Bushing (part no. B-307) is the interchangeable sizing insert that drops into an L.E. Wilson bushing neck sizing die body to set case neck tension. Precision handloaders select a bushing diameter based on loaded neck diameter and desired bullet grip, then swap bushings between cartridges or brass lots to fine-tune the result. Machined from steel, it’s built to hold its size through repeated sizing cycles. This bushing is sold on its own for reloaders already running a Wilson die body who want to expand or refine their bushing set.

Key Specifications

• Sizes case necks to a finished diameter of .307 inch.
• Machined from steel for repeated sizing cycles without losing shape.
• Drops into any L.E. Wilson bushing neck sizing die body as an interchangeable insert.
• Sold individually so handloaders can build a custom bushing set for exact neck tension.

Frequently Asked Questions

Will this bushing fit any Wilson neck sizing die body? Yes, it’s designed as a drop-in interchangeable bushing for L.E. Wilson bushing-style neck sizing die bodies.

How do I choose the right bushing diameter? Handloaders typically measure a loaded round’s neck diameter and size down a few thousandths for the desired bullet tension, then pick the closest bushing diameter, in this case .307 inch.

Buy the L.E. Wilson .307 Inch Steel Neck Sizing Die Bushing

Order the L.E. Wilson .307 Inch Steel Neck Sizing Die Bushing from Schaefer Defense’s reloading equipment selection. Our Lubbock, Texas gun shop ships fast, so serious handloaders can keep their reloading bench stocked with the exact tooling their process calls for.