Looks more like popcorn. Too big. What you really need is 20/40 grit corncob. Walnut cleans dirty brass and cob polishes it. Best results occur when you use the proper media for its intended purpose.
Corn cob 40 pound bag delivered to your door for $26:
Honestly, I'm going to go try one grit higher on the corncob because while the 20/40 works well it does eventually stick as it wears. Mixing them would be like sanding with 80 and 400 at the same time, it will create something but not what you really want.
I use a roughly 50/50 mix of lizard litter (walnut) and corn cob media I bought from Midway when I got my tumbler. here is a picture to see the size I'm using. It works great by the way.
If it isn't obvious -lol- corn on right, walnut on left.
I'm using the Kaytee corn cob from petsmart because they were out of anything smaller. it works, but don't put bottleneck cases .30 or smaller, and leave the primers in. It'll get stuck otherwise.
Grainger sells the same stuff, Econoline brand, but Drillspot sells it for a little less money AND it's delivered. Grainger is more expensive, and you also have to pay shipping. Plus Grainger does not sell to individuals but business accounts only so some folks can't buy from them anyway.
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