Hornady Custom Grade New Dimension Series Iv Rifle 2-Die Set .25 Wssm

The Hornady Custom Grade New Dimension Series IV rifle 2-die set for .25 WSSM gives handloaders the precision tooling needed to load this specialized wildcat cartridge. Built on Hornady's proven Custom Grade platform, this set combines straightforward functionality with the attention to detail that serious reloaders expect. Whether you're working up loads for a custom .25 WSSM rifle or fine-tuning ammunition for consistent performance, this two-die configuration handles the essential steps: full-length sizing and bullet seating.

Hornady's Custom Grade dies are hand-inspected and heat-treated steel, then hand-polished to a mirror finish that protects your brass from scratches and scoring. The full-length sizer die features a polished elliptical expander that reduces friction and minimizes case-neck stretching—critical when working with precision wildcat brass. The seating die incorporates a sliding in-line seating system that vertically aligns each bullet with the case neck, promoting straight, consistent seating from round to round. A built-in crimp function means you can apply crimp force without purchasing a separate die.

Setup and adjustment are straightforward. The Zip-Spindle design eliminates spindle wobble and ensures perfect alignment, while Sure-Loc rings let you dial in fine adjustments without slipping. A wear-resistant all-steel seating screw with compression washer provides smooth, precise depth control. The included storage box keeps your adjusted dies organized and protected between sessions.

The Series IV designation signals this die set is engineered for specialty and wildcat calibers like the .25 WSSM, so you get the exact specifications this cartridge demands rather than generic compromises.

Key Features

• Hand-inspected, heat-treated steel construction for durability and reliability
• Hand-polished mirror finish protects brass and prevents case scoring
• Zip-Spindle design eliminates spindle slippage and ensures consistent alignment
• Polished elliptical expander reduces friction and case-neck stretching
• Sliding in-line seating system aligns bullets straight with case neck for perfect centering
• Built-in crimp function—no separate crimp die needed
• All-steel seating screw with compression washer for precise depth adjustment
• Sure-Loc rings for secure, slip-free fine-tuning
• Storage box included for organized, protected die storage

Specifications

Frequently Asked Questions

What's included in this .25 WSSM die set?

The set contains a full-length sizer die and a seater die, plus an included storage box to keep your dies organized and protected.

Can I use this die set with my progressive reloader?

These are Hornady Custom Grade rifle dies built to standard specifications. Compatibility with your specific progressive press depends on your press model and toolhead design—verify with your press manufacturer or contact Hornady directly to confirm fit.

Is a crimp die necessary, or does this set have crimping built in?

This set includes a built-in crimp function in the seating die, so you can apply crimp without purchasing a separate crimping die.

Why is this set specific to the .25 WSSM rather than a generic .25 caliber option?

The .25 WSSM is a wildcat cartridge, and the Series IV designation means these dies are engineered with the exact specifications this specialized round demands. Generic tooling may not size or seat properly, so purpose-built dies ensure consistency and reliability.