Lee Precision Ultimate 4-Die Set 300 Winchester Magnum

Lee Precision Ultimate 4-Die Set 300 Winchester Magnum

The Lee Precision Ultimate Rifle Die Set in 300 Winchester Magnum is the complete four-die set for metallic rifle reloading: it combines full-length resizing, collet neck resizing, bullet seating, and crimping in a single package. It is the choice for those who reload both cases collected or fired in other firearms, as well as cases fire-formed in their own chamber, without having to purchase separate sets.

The full-length die returns the case to factory dimensions and is the necessary solution for mixed-source brass; it requires case lubricant. The Collet Neck Sizing Die, on the other hand, works on cases already formed in your own chamber: a steel collet squeezes the neck against a precision mandrel, reducing runout and requiring no lubrication. Bullet seating is handled by an Easy Adjust Dead Length bullet seating die, which sets the bullet to a consistent depth, while the collet-style Factory Crimp Die performs the crimp in a dedicated station, with repeatable results even on cases of uneven length.

Main features

• Four-die set for rifle cartridges, 300 Winchester Magnum caliber
• Full-length resizing die
• Collet Neck Sizing Die for neck-only resizing
• Easy Adjust Dead Length bullet seating die
• Collet-style Factory Crimp Die
• 7/8"-14 threaded bodies, compatible with standard reloading presses

Recommended use

Mounts on Lee and other brand presses with 7/8"-14 threading, in single-stage, turret, or progressive configurations. For cases fired in your own firearm, the Collet Neck Sizing Die is used, which extends case life; for cases from other sources, you switch to the full-length die with lubricant. Crimping remains a separate step independent of the seating adjustment.

Package contents

The set includes the four dies, shell holder, powder measure, and Lee instructions with reloading data. The press and cartridge components are not included.

Manufacturer code: 90738