Run it through the bore and let it sit for a few minutes. Then follow with another wet patch, wait, and repeat. The goal is to have no blue stains on your patches, indicating that there is no remaining metal fouling. (Remember, though, that a brass jag can leave a “false” stain on the patch, although it’s usually on the inside rather than the outside of the patch, so it’s easy to distinguish stains from bore fouling. When in doubt, use a cleaning jag.) When your patches come out with no trace of blue—and this may take a while if the fouling is extensive—dry the bore with several clean dry patches.