Redding Reloading Body Die Features The Redding Body Die for .300 Win Mag resizes only the body of the case and bumps the shoulder back to proper chambering dimensions leaving the case neck completely untouched. Because it has no internal expander ball or decapping components the die operates with minimal friction and a simpler more durable design than a full length sizing die. This targeted approach is especially valuable for reloaders who neck size their brass for accuracy but find that cases gradually become difficult to chamber after several firings. By bumping just the shoulder the body die restores proper headspace without disturbing the neck tension that neck sizing alone provides. Redding originally developed body dies for benchrest shooters before introducing them as a companion item alongside their Bushing Style Neck Sizing die sets for all calibers. After resizing with the body die reloaders should run the case through their neck sizing die to re-establish proper neck tension before seating a bullet. This two-step approach gives precision-minded .300 Win Mag shooters the best of both worlds the accuracy benefits of neck sizing combined with reliable chambering when needed. Sold separately or as part of a complete die set this body die is a valuable addition for any benchrest or precision reloading setup. Redding Reloading Body Die Specifications Manufacturer: Redding Reloading Model: Body Die Caliber: .300 Win Mag Die Type: Body Die Available At: GrabAGun