Replacement Mica Refill (1 Oz.)

The Replacement Mica Refill (1 Oz.) by Lyman is an essential consumable for reloaders and ammunition technicians who depend on media-based case processing. This 1-ounce refill pack restores the polishing and cleaning capability of tumbler media systems, which gradually break down and lose effectiveness over hundreds of reloading cycles. Whether you're preparing brass for precision rifle loads or bulk handgun ammunition, maintaining fresh media directly impacts case longevity and final cartridge consistency—making timely refills a core part of responsible reloading practice.

Mica media works by abrading and burnishing case surfaces during tumbler operation, removing oxidation, primer residue, and surface contaminants without damaging case walls or pocket geometry. The fine particulate nature of mica allows it to reach into flash holes and primer pockets where larger abrasives cannot. Over time, mica particles compact and lose cutting action; this 1-ounce refill allows users to top off or partially refresh their existing media mix rather than discarding an entire batch, extending media life and reducing waste. The lightweight formulation (0.02 lbs per package) makes it practical for reloaders to stock multiple refills without logistical burden.

Law enforcement armorers, military ammunition technicians, and serious civilian reloaders benefit most from keeping Lyman mica refills on hand for routine media maintenance. This product pairs seamlessly with Lyman tumblers and is compatible with any standard vibratory or rotary tumbler system that accepts loose media. For high-volume operations—such as those processing duty ammunition or match-grade cartridges—a regular refill schedule ensures consistent case preparation quality and protects your investment in media equipment. Store in a cool, dry environment and add small quantities as needed to restore polishing action.