Laelkhunter
WKR
Make sure you are adding a polish to the media. I use Flitz and add a capful of it to the walnut media, then let it run for 15 minutes to distribute the polish, and dry it out a little. If you put the brass in the tumbler when the media is still damp, it will clump up inside the brass and be difficult to remove.Thank you for all the feedback and new ideas. It looks like I will be sticking with the walmart media and trying some of the added steps mentioned.
I had purchased some once fired brass off gunbroker and it really looked good and the seller mentioned using stainless steel pins.
Don't use anything that contains ammonia (Brasso). It will weaken the brass. The Flitz tumbling media polish is the best I have found, and my brass is clean and shiny in about an hour. It shouldn't take much longer than that to get the brass clean. Definitely not a day or more.