Redding Type S Bushing Neck Die 300 Win Mag

The Redding Type S Bushing Neck Die for 300 Win Mag gives handloaders precise control over case neck sizing and concentricity—two of the biggest variables that separate mediocre ammo from match-grade loads. Unlike full-length sizing dies that size the entire case, this bushing-style neck die lets you resize only the neck, preserving case dimensions and extending brass life. That precision matters whether you're chasing sub-MOA groups at the range or building hunting rounds that perform when it counts.

The heart of the system is the interchangeable sizing bushing, available in .001" increments, so you can dial in exact neck tension for your brass and bullets. The die comes with a standard decapping button and a decapping pin retainer, giving you flexibility: size necks with the button in place for commercial or once-fired brass, or remove it entirely if you're the type who sorts and turns case necks for uniformity. The bushing self-centers on the case neck, which means better concentricity without fussy alignment—one less thing to chase when you're trying to tighten your groups.

The adjustable decapping rod lets you fine-tune where the bushing engages the neck, so you can resize just the upper portion if you prefer. This level of control is why serious reloaders—whether they're precision rifle shooters or hunters demanding consistency—reach for Redding Type S dies. It's built to last, designed to perform, and it's the kind of detail-focused tool that separates good reloading from great reloading.

Key Features

• Interchangeable sizing bushings in .001" increments for precise neck tension control
• Adjustable decapping rod to resize partial or full case neck length
• Self-centering bushing design enhances case neck concentricity
• Supplied with standard decapping button and pin retainer
• Sized specifically for 300 Winchester Magnum
• Ideal for precision rifle loads, hunting ammo, and brass life extension

Specifications

Frequently Asked Questions

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

A bushing neck die sizes only the case neck, preserving the body and shoulder dimensions of your brass. This extends case life, maintains tighter tolerances, and gives you more control over neck tension. A full-length die sizes the entire case from the shoulder to the neck, which is necessary when you're working with mixed or fireformed brass, but it's more aggressive on case life.

How do I adjust neck tension with the Type S bushing die?

Redding supplies interchangeable sizing bushings in .001" increments. You measure your loaded round's neck diameter, subtract your bullet diameter, and select the bushing that gives you your target neck tension. Once installed, the bushing self-centers on the case neck as it's pushed into the die, ensuring consistent, concentric sizing.

Can I use this die without the decapping button?

Yes. The decapping pin retainer supplied with this die lets you remove the decapping button if you prefer to size necks only—useful if you've already sorted and turned your case necks for uniformity and don't want the button interfering with your process.

Is this die compatible with my reloading press?

The Type S Bushing Neck Die is a standard rifle reloading die and will fit any press with standard 7/8-14 UNEF threads. Confirm your press accepts standard dies before purchase.