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The Finished Part Blog

The Finished Part Blog

Thursday, May 28, 2009

Polishing Brass Cartridges

Firearm ammunition reloading is becoming a much more popular pursuit for passionate shooters. This process requires cleaning and polishing the spend cartridges prior to the actual reloading. The brass casings below spent a significant amount of time on the outdoor range prior to collection. In addition to the powder residue and dirt on the shells, the brass showed significant oxidation and tarnishing.
Oxidized and dirty brass shells

After vibratory tumbling with high alumina, polishing Precision Ceramic Spheres and a mild, organic acid cleaner (Kramco 1030) for only 20 minutes, the brass looked nearly brand new. Additional dry tumbling with Corn Cob Grit or Walnut Shell Grit result in an even brighter finish.
Polished brass cartridge shells


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