Lyman 7702111 Pro Carbide Trim Die for 300 AAC Blackout

The Lyman Pro Carbide Trim Die for 300 AAC Blackout is purpose-built for reloaders who want precision case prep without the fuss of manual trimming. Designed specifically for 300 Blackout brass, this carbide trim die threads into your existing press—whether it's a Lyman Mark 7 or any other standard reloading press—and handles the job cleanly and consistently. If you're loading subsonic or supersonic rounds for this cartridge, keeping case length within spec is non-negotiable for reliable feeding and safety, and this die makes that step straightforward.

Built in the USA from stainless steel, the Lyman Pro Carbide series is engineered for durability. The carbide cutting insert resists wear far better than conventional steel, so you'll trim hundreds of cases without the edge degrading the way older designs do. Bottom threading (7/8-14) fits any standard reloading press, and the top threading (13/16-20) accepts Lyman's press-mounted trimmer attachment or other compatible aftermarket trimmers, giving you flexible setup options depending on your workflow.

Whether you're working up handloads for precision rifle work, hunting, or suppressed shooting, consistent case length is part of the foundation of reliable ammunition. This die takes one variable out of the equation and keeps your 300 Blackout brass in spec run after run.

Key Features

• Stainless steel construction for corrosion resistance and longevity
• Carbide cutting insert resists wear through hundreds of cases
• Bottom thread (7/8-14) fits all standard reloading presses, including Lyman Mark 7
• Top thread (13/16-20) compatible with Lyman press-mounted trimmers and other popular aftermarket attachments
• Made in the USA to Lyman quality standards

Specifications

Frequently Asked Questions

Will this 300 Blackout trim die work with my reloading press?

Yes, if your press has a standard die hole. The bottom thread (7/8-14) fits Lyman Mark 7 presses and all other conventional reloading presses on the market.

Can I use a press-mounted trimmer with this die?

Yes. The top thread (13/16-20) is designed to accept Lyman's press-mounted trimmer or other compatible press-mounted trimmer attachments.

What's the advantage of carbide vs. steel in a trim die?

Carbide resists wear significantly longer than conventional steel, so you can trim hundreds of cases before the cutting edge begins to dull. This saves you time and money over the long term, especially if you're loading large batches of 300 Blackout.

Is this die made in the USA?

Yes, the Lyman Pro Carbide Trim Die is manufactured in the USA to Lyman's quality standards.