The Lee Precision Bullet Seating Die for .300 Winchester Magnum is sold as a standalone die for reloaders who already own a sizing die or who are replacing a worn component in an existing set. It uses Lee's dead-length sleeve design, which seats each bullet to a consistent overall cartridge length without applying any crimp — a deliberate choice for bolt-action hunting cartridges such as the .300 WM where a separate crimp step (or none at all) is preferred. The sleeve bears against the case mouth to set depth, keeping bullet-seating depth consistent regardless of minor variations in case length. The die body is steel and threads into any standard reloading press via the universal 7/8"-14 thread. The .300 Winchester Magnum is a belted magnum, and this die is correctly dimensioned for that case head. Compatible with the Lee PaceSetter, Deluxe and Ultimate die sets for the calibre.
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