RCBS 87068 Multi-Caliber Universal Case Cleaning Media

When you're processing brass for reloading, case cleanliness matters—dirty cases wear out your dies faster and compromise the finish of your finished ammunition. The RCBS 87068 Multi-Caliber Universal Case Cleaning Media is a corn cob–based dry tumbling compound designed to work across all calibers in virtually any vibratory or rotary tumbler. Unlike abrasive media that can leave residue behind, this formula cleans cases thoroughly while burnishing them to a bright, professional polish in a single run.

Reloaders often debate walnut versus corn cob media. Walnut is aggressive and cuts through heavy carbon buildup, but corn cob offers a gentler, faster clean with excellent polishing action—making it ideal if you're processing brass regularly and want to minimize media dust and speed up your workflow. Since this media works universally across cartridge types and tumbler brands, you're not locked into a single setup or limited by caliber-specific requirements.

Whether you're prepping .223 Remington, .308 Winchester, 9mm, or any other caliber, load this media into your tumbler with your cases and let it work. The fine corn cob particles get into case necks, flash holes, and primer pockets, emerging with cases that look factory-fresh and ready for the progressive press or single-stage reloading setup.

Key Features

• Corn cob dry media formula suitable for all calibers
• Compatible with any vibratory tumbler or RCBS rotary case tumbler
• Delivers both cleaning and high-luster polish in one process
• Finely ground for efficient case neck and primer pocket cleaning
• Restores cartridge cases to like-new appearance and function

Specifications

Frequently Asked Questions

What calibers does this media work with?

This is a universal, multi-caliber cleaning media. It works with .223 Remington, .308 Winchester, 9mm, .45 ACP, shotgun hulls, and any other cartridge you reload—there's no caliber restriction.

Can I use this in my existing tumbler?

Yes. The RCBS 87068 is compatible with any vibratory tumbler, including non-RCBS brands, as well as RCBS rotary case tumblers.

How does corn cob media differ from walnut media?

Corn cob media is finer and less abrasive than walnut, delivering faster cleaning cycles and a high-polish finish with less dust. It's a good choice if you process brass frequently and want efficiency without the heavy-duty cutting action of walnut.

Will this media clean the insides of my cases?

Yes. The finely ground corn cob particles reach into case necks, flash holes, and primer pockets to clean all internal surfaces while polishing the exterior.