Since I'm testing out Hoppes 9 since I haven't used it much how long do you guys let it sit in the barrel? As in run a wet patch through how long do you wait before you run a dry patch through? Does cleaning guns need to be a several day process or can it just be a several hour process?

Seems like the Hoppes 9 is bringing out some black stuff on the patches where as it was coming out clean with the Wipe Out. I'm not sure if it's because I put a brush in the chamber to clean it slightly and it loosend up some or if it's just getting more stuff out.