Stainless Pro Carbide Sizing Die - 300 Blk

The Lyman Stainless Pro Carbide Sizing Die for .300 Blk is built for reloaders who need reliable, consistent case sizing without the maintenance hassle of traditional steel dies. The stainless steel body resists corrosion and wear, while the carbide sizing rings eliminate the need for case lube—a real time-saver when you're processing volume. If you're loading subsonic or supersonic .300 Blackout ammunition for an AR pistol, short-barreled rifle, or precision bolt gun, this die handles the critical first step of case preparation with minimal fuss.

The spring-loaded decapping rod system removes spent primers cleanly and reliably, keeping your workflow smooth from case to case. Carbide technology means less downtime cleaning and re-lapping dies, so you spend more time at the bench actually reloading and less time maintaining equipment. This die is particularly valuable if you're running a progressive or semi-progressive press and need dies that won't slow you down.

Like all Lyman carbide dies, this sizing die is engineered to last. The stainless construction paired with carbide rings gives you a tool that performs the same way on your first box of cases as it will on your thousandth. For .300 Blk shooters serious about ammunition consistency and efficiency, it's a smart addition to your die set.

Key Features

• Stainless steel body resists corrosion and extends die life
• Carbide sizing rings eliminate the need for case lube
• Spring-loaded decapping rod for reliable primer removal
• Engineered for .300 AAC Blackout cartridges
• Designed for use in standard reloading presses

Specifications

Frequently Asked Questions

Can I use this die without case lube?

Yes. The carbide sizing rings eliminate the need for case lube, which saves time and simplifies your reloading process.

What press will this die work with?

This die is designed for use with standard reloading presses that accept standard-sized dies. Confirm your press compatibility with its manual before ordering.

Is this die compatible with both subsonic and supersonic .300 Blackout loads?

This die is manufactured for .300 AAC Blackout cartridges. It will size cases regardless of the intended load velocity, but always consult Lyman's reloading manual for proper load development specific to your rifle and ammunition type.

What's included with the die?

The product includes the stainless steel carbide sizing die with spring-loaded decapping rod as described. Check the product packaging or contact us to confirm if any additional components or accessories are included.