CharlieNC
Gold $$ Contributor
In the past I occasionally had issues cleaning carbon from the grooves after a 2-day F class match. After trying most of the options that are frequently suggested (including Iosso bore paste) the best solution was spray carb cleaner plus the bronze brush; it removed what all others had not after many strokes.
This time was different. After two matches with significant wind and heavy mirage, the clouds rolled in and the wind stopped. So I ran the 223 as rapidly as I could to take advantage of the conditions; I had never run the barrel that hard before. Following the carb cleaner + brush, I soaked overnight using Wipe Out because I noticed a bit of copper using the endoscope. Next morning to my surprise I observed carbon tracks on top of the lands; appearing as railroad ties built up on all the lands in one location. But this time numerous brushings, including another attempt with Isso did not seem to begin to touch them. Becoming a bit worried I decided to try the "best" penetrating solution; 50:50 synthetic automatic trans fluid : acetone (there have been a couple of comprehensive studies demonstrating superiority vs Kroil and many other commercial products). To my surprise after a couple of hours soaking and a few strokes the carbon mounds were nearly totally removed. Following an overnight soak and 50 strokes of the brush the bore is now completely clean of the carbon mounds.
While only a first observation using ATF:acetone for carbon, the rapid improvement was dramatic so I will be trying this more in the future as a general cleaning solution. And maybe I won't run the barrel that hard again; well maybe I will because I have a new one being built!
This time was different. After two matches with significant wind and heavy mirage, the clouds rolled in and the wind stopped. So I ran the 223 as rapidly as I could to take advantage of the conditions; I had never run the barrel that hard before. Following the carb cleaner + brush, I soaked overnight using Wipe Out because I noticed a bit of copper using the endoscope. Next morning to my surprise I observed carbon tracks on top of the lands; appearing as railroad ties built up on all the lands in one location. But this time numerous brushings, including another attempt with Isso did not seem to begin to touch them. Becoming a bit worried I decided to try the "best" penetrating solution; 50:50 synthetic automatic trans fluid : acetone (there have been a couple of comprehensive studies demonstrating superiority vs Kroil and many other commercial products). To my surprise after a couple of hours soaking and a few strokes the carbon mounds were nearly totally removed. Following an overnight soak and 50 strokes of the brush the bore is now completely clean of the carbon mounds.
While only a first observation using ATF:acetone for carbon, the rapid improvement was dramatic so I will be trying this more in the future as a general cleaning solution. And maybe I won't run the barrel that hard again; well maybe I will because I have a new one being built!