Hornady One Shot Tumbler Brass Cleaning Media Corn Cob - 3.75 lb Jug

Keeping your brass clean is one of the easiest ways to improve consistency and extend case life—and the Hornady One Shot Tumbler Brass Cleaning Media is the workhorse that makes it happen. This 3.75 lb jug of ground corn cob media is purpose-built for use in case tumblers, including the popular Hornady M-2 tumbler, to restore fired brass to near-new condition before sizing, loading, and shooting.

Reloaders who prioritize consistent case prep know that clean brass matters. Tarnish, residue, and oxidation can affect how cases feed through dies and seat into chambers. This corn cob tumbler media abrades away surface contamination and tarnish without damaging case walls, leaving your brass bright and polished. The result is cases that look and perform like new, which translates to smoother press operation and more predictable loading cycles.

The 3.75 lb size is practical for regular bench reloaders—enough media to handle several cleaning runs without constant refills, but not so bulky that storage becomes a problem. Corn cob media is a proven standard in the reloading community, offering a gentle but effective clean that works on rifle and pistol brass alike. If you're already tumbling your cases, this media swap or refill is a straightforward upgrade to your case prep routine.

Key Features

• Ground corn cob construction designed for tumbler use
• Removes tarnish and residue to restore brass appearance and function
• Compatible with Hornady M-2 Case Tumblers and similar equipment
• Improves press and die performance by delivering cleaner cases
• 3.75 lb jug—practical size for regular reloading schedules

Specifications

Frequently Asked Questions

What tumbler is this media compatible with?

This Hornady corn cob media is designed for use with Hornady M-2 Case Tumblers and other standard case tumblers that accept this type of media.

Will this media work for both rifle and pistol brass?

Yes. Corn cob media is gentle enough for all brass types—rifle, pistol, magnum, and standard calibers alike.

How much media do I need per cleaning run?

That depends on your tumbler capacity and the amount of brass you're cleaning. The 3.75 lb jug provides enough media for multiple cleaning cycles in a typical bench tumbler.

How do I know when to replace the media?

Tumbler media gradually becomes fine dust and loses abrasive effectiveness over time and use. When you notice cases aren't polishing as well or the media looks predominantly like dust, it's time for a fresh batch.