Just wondering if anyone has found a high volume way to clean...THE CARBON BUILD UP OFF THE OUTSIDE....of case necks. I'm not worried about any other part of the case for this topic. In regards to high volume cases I am talking 500-1000 .223, 500 .308, 2-300 300 RUM, etc. I have tried everything from ISSO cleaner, Soap and Water, 10 hrs in vibratory cleaner, Vinegar and Water, steel wool, etc. The only ways I have found take forever for high volumes. I have looked at Sonic cleaners, but they actually only clean small amounts at a time. The fastest way I have found that actually removes all the carbon is just using a brass cleaner/rag on every single case neck. Open to any ideas guys are using to quickly do this.