it didn't tumble considerably all the time 3 hrs here 3hrs there
rotaryWhich type of tumbler are you using vibratory or rotary?
If the brass is coming out black you are not putting enough dawn and limieshine you can't add to much dawnl had this tumbler for over three years
Take out the pennies. If they are late minted, then they are made of 97.5% zinc. That would turn the water dark when tumbling with pins.I'm tumbling 85 rounds of brass and pennies together and changing water every day for over a week and still get dirty water . does the barrels go bad