I use corn cob and "CRC Mechanix Orange" citrus hand cleaner from Orchard Supply. $3.99 for 16 oz. Two capfuls have cleaned 5000 rounds so far; the cob is gray now, but shows no sign of needing replacement. I run the tumbler for 90 minutes / batch. They come out clean and shiny like they're goin' to church.
This is 'way better stuff than Midway's White Lightning.
This is 'way better stuff than Midway's White Lightning.