LYMAN Small Tufnut Untreated Tumbling Media for Brass Cleaning

If you reload rifle, pistol, or shotgun ammunition, clean brass is the foundation of consistent, safe loads. The Lyman Small Tufnut Untreated Tumbling Media is a walnut-based polishing medium designed to restore fired cases to near-new appearance in a standard tumbler. Unlike treated media, untreated Tufnut gives you full control over the cleaning process—no added compounds or oils, just aggressive cutting action that strips tarnish, carbon, and residue from case bodies and primer pockets.

Small Tufnut is the go-to choice for reloaders who process large volumes of brass or who prefer the flexibility of untreated media. A few hours in your tumbler (exact time depends on the condition of your brass and your tumbler's speed) produces cases that are polished, bright, and ready for the sizing die. The untreated formula means no messy residue to deal with afterward—just a quick rinse and your brass is prepared for the next step in your reloading workflow.

Whether you're prepping match-grade brass for precision rifle loads or cycling through bulk range brass for everyday practice, Lyman Small Tufnut media is a reliable, economical choice that's backed by decades of reloader trust.

Key Features

• Untreated walnut media for complete cleaning control
• Removes tarnish, carbon, and residue from fired cases
• Compatible with standard tumbler equipment
• No added oils or compounds—clean, mess-free separation after tumbling
• Economical choice for high-volume brass processing

Specifications

Frequently Asked Questions

What's the difference between treated and untreated Tufnut media?

Untreated Tufnut is pure walnut media without added polishing compounds or oils. It gives you more control over your tumbling process and produces no slurry residue—just rinse and you're done. Treated media includes conditioning agents for additional shine but requires more cleanup.

How long does it take to clean brass with Tufnut?

Typical tumbling runs take a few hours, depending on how dirty your brass is and your tumbler's speed. Start with a test batch to find the timing that works for your equipment and brass condition.

What size tumbler do I need for Small Tufnut?

Small Tufnut is designed for standard reloading tumblers. Check your tumbler's capacity and media recommendations to ensure compatibility.

Can I use this for rifle, pistol, and shotgun brass?

Tufnut media works on all fired brass types. The untreated formula is equally effective on rifle cases, pistol cases, and shotgun hulls.