RCBS 22469 Supreme 2-Die Set for 300 Blackout Reloading

The RCBS 22469 Supreme 2-Die Set for 300 Blackout gives you everything needed to start reloading this popular subsonic cartridge. This complete setup pairs RCBS's proven full length die technology with a matched shell holder and chamber case length gauge, so you're not scrambling to source parts separately. Whether you're loading ammo for a precision rifle, a short-barreled AR, or a dedicated 300 Blackout bolt gun, having the right dies makes the difference between a frustrating first session and one where you're confident in your process from the first press stroke.

The 300 Blackout has become a go-to round for hunters and shooters who want effective subsonic capability or standard supersonic performance in a compact platform. Reloading lets you optimize loads for your rifle's barrel length and intended use—something factory ammo simply can't do. The chamber case length gauge included here takes the guesswork out of trimming, a critical step for consistent, safe 300 Blackout loads.

If you're new to reloading, a complete die set like this removes one major hurdle: you get the full length sizing die for proper case preparation, plus the components that work together out of the box. RCBS's reputation for precision and durability in reloading tools means you're buying equipment that'll outlast dozens of reloading sessions and deliver repeatable results.

Key Features

• Full length die set optimized for 300 Blackout dimensions and performance
• Matched shell holder included for fast, accurate cartridge positioning
• Chamber case length gauge to ensure proper case prep and consistency
• Complete system—no hunting for compatible accessories

Specifications

Frequently Asked Questions

What dies do I need to reload 300 Blackout ammo?

The RCBS Supreme 2-Die Set includes a full length die, which handles the primary sizing and forming step for 300 Blackout cases. The second die completes the loading sequence. Both are optimized for this cartridge's dimensions.

Does this set include everything I need to get started?

This set includes the two dies, a shell holder sized for 300 Blackout, and a chamber case length gauge. You'll still need a reloading press, powder measure, calipers, and other standard reloading bench equipment, but you have the caliber-specific tools covered.

Is the shell holder included?

Yes. The RCBS 22469 Supreme set includes a matched shell holder, so the die and shell holder are designed to work together for 300 Blackout.

Can I use these dies on any reloading press?

RCBS dies are manufactured to standard specifications and will fit standard reloading presses, but compatibility depends on your press design. Consult your press manual or contact RCBS directly if you have questions about your specific setup.