L.E. Wilson 300 Remington Ultra Magnum Bushing Full Length Die

The L.E. Wilson 300 Remington Ultra Magnum bushing full length die gives precision reloaders control over neck tension while sizing the case body in a single stroke. This die is engineered for shooters who want the accuracy benefits of partial neck sizing without the extra step—it leaves the bottom 3/16" of the case neck unsized, a technique many experienced handloaders prefer for improved consistency and shot-to-shot performance. Built from high-quality, heat-treated steel hardened to L.E. Wilson specifications (harder than Grade 8 bolts), it's made to handle the demands of magnum rifle cartridges and deliver reliable results across hundreds of reloading cycles.

The bushing design lets you dial in your exact neck tension by swapping interchangeable bushings (sold separately; L.E. Wilson and Redding bushings both fit). An adjustable depth decapping rod and an extra decapping punch come included, so you can start working right out of the box. Unlike some full length dies, this one contains no expander, keeping the process streamlined and letting the bushing do the work. The die threads into standard 7/8" reloading presses and sizes the shoulder and body dimensions while protecting neck runout—a setup that appeals to long-range hunters and precision shooters building match-grade ammunition.

L.E. Wilson's reputation for tight tolerances and meticulous manufacturing shows in every detail: stainless parts resist corrosion, the included lock nut is built to their exacting specs, and the die's durable construction means it'll stay accurate year after year. If you're stepping up to magnum reloading and want a die system that gives you real control without compromise, this is a solid choice.

Key Features

• Bushing-type full length sizing die for 300 Remington Ultra Magnum
• Leaves bottom 3/16" of case neck unsized for improved accuracy
• Hardened steel construction—tougher than Grade 8 bolts
• Stainless parts for long-lasting corrosion resistance
• Adjustable depth decapping rod with extra decapping punch included
• Interchangeable bushing system (bushings sold separately)
• Compatible with Redding and L.E. Wilson neck bushings
• Fits standard 7/8" reloading presses
• Sizes shoulder and body dimensions in one stroke

Specifications

Frequently Asked Questions

What's the difference between this bushing die and a standard full length die?

This die uses an interchangeable bushing to size the case neck, giving you precise control over neck tension. It also leaves the bottom 3/16" of the neck unsized—a practice many precision shooters find delivers better accuracy and less runout than sizing the entire neck. Standard dies size the full neck and don't offer bushing customization.

Do the bushings come with the die?

No, neck bushings are sold separately. L.E. Wilson neck bushings are recommended, but Redding bushings will also fit this die.

What press will this die fit?

This die is designed for standard 7/8" reloading presses—the most common thread size for single-stage and progressive press equipment.

What comes in the box?

The die comes with an adjustable depth decapping rod, an extra decapping punch, and an L.E. Wilson-manufactured lock nut. Neck bushings must be purchased separately.