SKU: 100018214
UPC: 011516713353
MPN: 7631335
16 Lbs Treated Corncob Media by Lyman is the industry-standard tumbling compound designed for reloaders and ammunition inspectors who demand consistent brass polishing and cleaning. This treated corncob media accelerates the brass preparation process, removing dirt, carbon residue, and oxidation to restore case brightness and uniformity. Whether you're preparing virgin brass, recycled rounds, or finished cartridges for inspection, this 16-pound container delivers the volume needed for both small-batch and high-volume reloading operations.
The media's treatment process enhances cleaning efficiency while reducing the risk of static electricity buildup in your tumbler—a critical consideration for safe ammunition handling. Lyman's corncob formulation is engineered to be gentle on case walls and primer pockets while remaining abrasive enough to cut through stubborn tarnish and fouling. The 16-pound size accommodates both single-stage and multi-stage tumble operations, making it economical for reloaders who process brass regularly. Unlike untreated media, this product incorporates additives that accelerate the burnishing action, reducing tumble time and energy consumption without compromising case integrity.
Reloaders working with rifle or pistol brass will find this media essential for achieving uniform case appearance and ensuring reliable firing performance through improved surface preparation. The treated corncob is compatible with all standard vibratory and rotary tumblers marketed to handloaders, making it a drop-in solution for existing setups. After tumbling, simple screening or rinsing removes media residue from cases, leaving them ready for inspection, depriming, or resizing. A 16-pound supply typically lasts through hundreds of brass processing cycles, making it a cost-effective investment for serious reloaders building ammunition to precision standards.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.