Hornady Match Grade Horn 545163 Prem Die Set 300 Wm.308

The Hornady Match Grade 300 Win Mag die set puts precision ammunition assembly in your hands. Built for handloaders who demand tight groups downrange, this premium die set combines Hornady's rigorous manufacturing tolerances with a modular design that gives you control over every variable in the reloading process. Whether you're loading for a long-range hunting rifle or a competition target gun, Match Grade dies reward careful technique with measurable improvements in case prep and bullet seating concentricity.

The heart of this system is the interchangeable neck-sizing bushing design. Rather than relying on a fixed sizing diameter, you select the bushing that matches your cartridge's exact dimensions—eliminating the overworking of brass and the neck tension inconsistencies that cause shot-to-shot velocity variation. This modular approach means one die body can be adapted to multiple loads and brass lots, extending the life of your equipment investment.

The seating die ships with Hornady's Click-Adjust Bullet Seating Micrometer pre-installed, a 2025 update that makes incremental seating depth adjustments fast and repeatable. No more guessing or fumbling with shims—turn the micrometer knob, feel the click detents, and lock in precise bullet seating in tenths of a thousandth. For shooters who reload 300 Winchester Magnum, this die set eliminates excuses and puts consistency squarely in your court.

Key Features

• Interchangeable self-centering neck-sizing bushings eliminate case neck overworking
• Tight manufacturing tolerances designed to tighten group sizes at the range
• Click-Adjust Bullet Seating Micrometer factory-installed for precise, repeatable seating depth
• Modular design adapts to multiple loads and brass lots
• Premium construction for competitive and hunting reload applications

Specifications

Frequently Asked Questions

What is a neck-sizing bushing and how does it help my loads?

A neck-sizing bushing is a removable insert that sizes only the case neck to a precise diameter, rather than sizing the entire case body. By selecting the bushing that matches your specific case and requirements, you avoid over-sizing the neck, which reduces brass work-hardening and maintains more consistent neck tension from round to round—a primary driver of tight groups.

Can I use these dies with other 300 Win Mag loads or brass lots?

Yes. The interchangeable bushing design allows you to adapt the die body to different cases or loads. You may need different bushings for different brass lots or reloading approaches, but the die body itself remains constant, making the system flexible and cost-effective over time.

Does this die set come with the seating micrometer already installed?

Yes. As of 2025, Hornady ships the Match Grade seating die with the Click-Adjust Bullet Seating Micrometer pre-installed from the factory, eliminating an assembly step.

What does the Click-Adjust Bullet Seating Micrometer do?

The micrometer allows you to adjust bullet seating depth in small, precise increments with tactile click detents. This makes it fast to dial in exact seating depth and easy to replicate the same depth across multiple rounds without shims or trial and error.