Hornady Custom Grade Series III 2-Die Set for 6mm GT - Includes Sizing & Seater (Model 546243)

The Hornady Custom Grade Series III 2-Die Set for 6mm GT is a precision reloading die set built for shooters who demand consistency and durability from their handloading equipment. This two-die set includes a full-length sizing die and a bullet seater die—everything you need to load high-quality ammunition for the 6mm GT cartridge. Whether you're developing loads for precision rifle competition, long-range hunting, or target work, this set combines Hornady's reputation for machined excellence with practical features that make the reloading process smoother and more controlled.

Hornady Custom Grade dies are known for their refined internal finish and tight tolerances, which support consistent case sizing and bullet seating. The Series III sizing die features the Zip Spindle design—a locking mechanism that prevents spindle slippage during operation while still allowing you to make fine adjustments by turning the spindle or zip it up and down quickly for larger changes. The light threads cut into both the spindle and collet give you incremental adjustment control without fumbling with separate tools.

The seater die incorporates Hornady's in-line bullet seating system with a built-in crimper, so you can seat and crimp in a single stroke if needed. A retainer ring keeps the seating screw accessible and secure. Both dies come with smooth finish lock rings that feature wrench flats for secure, repeatable positioning in your press. The elliptical expander in the sizing die helps prepare cases for consistent bullet loading. Each set arrives in an easy-access die box for organized storage. Hornady backs Custom Grade dies with a lifetime guarantee against breakage or wear from normal use.

Key Features

• Two-die set: full-length sizing die and bullet seater die for 6mm GT
• Zip Spindle design locks to eliminate slippage during sizing
• Fine incremental adjustment via threaded spindle and collet
• In-line bullet seating system with built-in crimper
• Elliptical expander for consistent case preparation
• Smooth finish lock rings with wrench flats
• Seater adjustment screw retainer ring
• Precision machined internals and refined finish
• Lifetime warranty against breakage from normal use
• Includes storage die box

Specifications

Frequently Asked Questions

What dies are included in this 6mm GT set?

This set contains a full-length sizing die and a bullet seater die. The sizing die handles case sizing and expansion, while the seater die seats bullets and crimp in one operation.

Can I use the built-in crimper, or is it optional?

The seater die has a built-in crimper that can be used if your 6mm GT ammunition requires it. You can also seat bullets without crimping if you prefer—it's your choice based on your load specifications.

What is the Zip Spindle and how does it improve reloading?

The Zip Spindle is a locking mechanism on the sizing die that prevents the spindle from slipping during operation. Light threads allow you to make small adjustments by turning the spindle, or zip it up and down for larger changes quickly—all without losing your setup.

Is this set backed by a warranty?

Yes. Hornady Custom Grade dies are guaranteed never to break or wear out from normal use.