Forster Products 300 Winchester Magnum Bushing Bump Neck Die

The Forster Products 300 Winchester Magnum Bushing Bump Neck Die (brand part no. BBD3651) sizes the case neck down using an interchangeable steel bushing instead of a fixed expander-ball setup, working the brass less and improving neck concentricity — a favorite approach among precision and bench-rest reloaders working up 300 Winchester Magnum loads. The bushing itself is sold separately, letting a reloader stock several diameters and fine-tune neck tension for a specific bullet and chamber. It threads into a standard press just like a conventional die.

Key Specifications

• Sizes case necks for 300 Winchester Magnum brass using an interchangeable bushing rather than a fixed expander ball.
• Bushing-style sizing works the brass less than a full expand/resize cycle, extending case life.
• Bushings are sold separately so a reloader can stock multiple diameters and dial in neck tension precisely.
• Threads into a standard 7/8-14 press hole, fitting any single-stage or turret press.

Frequently Asked Questions

Does this die full-length resize the case body? No, this is a neck-only bushing die; it sizes and bumps the shoulder without full-length resizing the case body.

What bushing diameter do I need? Bushing diameter depends on your loaded round’s neck outside diameter and desired neck tension; a bushing chart or a caliper on a loaded round will confirm the right size.

Will this die work in any single-stage or turret press? Yes, it threads into the standard 7/8-14 die hole used by virtually all single-stage and turret presses.

Buy the Forster Products 300 Winchester Magnum Bushing Bump Neck Die

Order the Forster Products 300 Winchester Magnum Bushing Bump Neck Die from our reloading dies selection and take more control over neck tension on your 300 Winchester Magnum brass. Ships fast from a Lubbock, TX gun shop.