As a new loader, I often wondered what I would do when my brass got ugly. Well, I fired off my first hundred or so handloads, and I was surprised to find that the Bullseye powder I'm using leaves my shells a sooty mess. There were black smudges on the outside, and the insides of many looked downright nasty. Enough so, that I hesitated to reload them in their existing state. I assumed when I started all this that I would buy a tumbler and some kind of media and clean them when necessary, but I always had some place else for the money to go. As I am now on restricted hours and pay at work till March, I decided I needed to find an alternative, and I got an idea I wanted to try.
I already had part of a gallon jug of a product called "Purple Power" in the garage. In the past, I have successfully used this to degrease engines and engine bays. It is a heavy duty degreaser that is non-flamable and biodegradable (can be poured down the drain) and is available in places like Auto Zone, Advance Auto, and even Dollar General. It usually sells for between $3.00 - $4.00 per gallon. Safety note: this stuff is still very caustic (probably highly alkaline) and rubber gloves and protective eye wear are a must.
I first de-primed all my shells, then pirated one of my wife's 2 quart Rubbermaid food storage containers. I'll catch hell next time there's leftover meatloaf to freeze. I put the shells in the container getting as many as possible to lay down, then poured roughly a 16-24 oz. of the Purple Power in the container over top of the shells and let them soak on my work bench for 24 hours. I then fished them out wearing the rubber gloves (I may look into a kitty litter scoop for this) and put them into a bucket of clean water to rinse, then spread them out on a folded towel to dry overnight.
Results? Pretty darned good! I had bought some used brass that had been tumbled and they arrived looking like gold. These aren't quite that good, but pretty dag-on close! Both the insides and the outsides of the cases are VERY clean. Some of the primer pockets still have a small amount of crud in them, but I've already adopted the habit of examining each one and using a small bore wire brush on a cordless drill where necessary. The remaining Purple Power is clear as a bell with only a small amount of sediment at the bottom. I intend to just snap the lid on and store it until needed again, and expect to be able to reuse it many times before I flush it down the sink.
My wife is a seamstress and made me aware of plastic trays with multiple upright plastic spikes to store spools of thread on. I may go to JoAnn Fabrics and look for enough to rack a hundred shells on to dry. Is this as good as tumbling them? Not quite, but almost, and a heck of a lot cheaper! Even in the batch of tumbled shells I loaded, I found a few with dirty primer pockets so that would be an on-going issue in any case. Try it and see for yourself!