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Harbor freight has a good deal on walnut media too. Works well and is inexpensive. I clean 4-5 batches a month. I use straight walnut with no additives. I run for about 60-90 minutes. Just to clean. I don’t care if they look brand new or not. I change the media when it starts getting very fine grained and very dusty. About every 6 months. The dust annoys me. This might be too early but I don’t care. Walnut is cheap. When I load 556, which is only a few times a year, I use the walnut to remove my diy case lube. I add a cap of mineral spirits per batch.
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