Hornady 546203 Custom Grade Series III 2-Die Set for 5.7x28mm (Sizing/Seater Included)

The Hornady Custom Grade Series III 2-Die Set for 5.7x28mm is a precision reloading die set purpose-built for shooters working with this modern rifle cartridge. This two-die set includes a full-length sizing die and bullet seater die, giving you the core tools needed to reload 5.7x28mm ammunition with repeatability and accuracy. Hornady's Custom Grade dies are machined to exacting standards and finished with attention to detail—they're engineered to last a lifetime under normal reloading use and come with a no-break guarantee.

The Series III design introduces meaningful improvements over earlier generations. The Zip Spindle mechanism on the sizing die locks firmly in place to prevent unwanted slippage, and fine threads cut into both spindle and collet let you dial in precise incremental adjustments or make quick larger changes as needed. The in-line bullet seating system keeps cartridges properly centered during seating, and the built-in crimper handles case mouth finishing in one step. Smooth finish lock rings with wrench flats give you solid purchase when torquing dies into your press, and an elliptical expander supports consistent case neck work.

If you're loading 5.7x28mm for a lightweight AR-platform rifle, competition shooting, or practice sessions, this die set delivers the precision and reliability Hornady is known for. The included seater adjustment screw retainer ring keeps your fine-tuning secure, and the easy-access die boxes protect your investment and keep everything organized on the shelf or in your reloading bench.

Key Features

• Full-length sizing die with Zip Spindle locking mechanism for zero slippage
• Bullet seater die with in-line seating system for consistent cartridge centering
• Built-in crimper for single-step case mouth finishing
• Smooth finish lock rings with wrench flats for secure press installation
• Elliptical expander for reliable case neck work
• Incremental adjustment threads for precision dial-in or quick changes
• Seater adjustment screw retainer ring to lock in your settings
• Lifetime durability guarantee against breakage under normal use
• Included storage boxes for organization and protection

Specifications

Frequently Asked Questions

Is this die set compatible with my 5.7x28mm rifle?

Yes—this Hornady Custom Grade Series III set is designed specifically for 5.7x28mm cartridges. It includes the sizing and seating dies you need to reload this cartridge on any standard single-stage or progressive press.

What dies are included in this 2-die set?

You get a full-length sizing die with the Zip Spindle locking mechanism and a bullet seater die with in-line seating and built-in crimper. This combination handles case sizing, expanding, seating, and crimping—the core steps for reloading 5.7x28mm.

Does Hornady warranty this reloading die set?

Yes. Hornady guarantees these Custom Grade dies against breakage or wear-out under normal reloading use for as long as you own them.

Can I make fine adjustments to the sizing die?

Absolutely. The Series III Zip Spindle design includes fine threads on both the spindle and spindle collet, allowing you to make incremental adjustments by turning the spindle, or to make larger adjustments by zipping the spindle up or down quickly.