After purchasing way to many cleaning products, I now know a bore camera is the only way to know how effective your cleaning process is.
Under a $100.00 shipped now too.
Any time I hear this or that process is the only way to go I wonder if the results have ever been verified .
A bore camera image will shock many, especially with neglected carbon, nasty copper fouling and the condition of new to you guns.
Wipeout over night is a decent place to start but after a trying a can and checking results, it will 100% not git rid of carbon and copper neglect in one night or even two.
My routine now is to not let carbon or copper build if possible,(every barrel is very different) once you figure out what works the results are 100% and much faster than patch and hope. Check most when I'm done. Takes 1-2 minutes.
Bore guides and proper fitting rods are a must.
Now using CLR for carbon and an initial crude mop then Shooters Choice for copper. Isso for real nasty fouling and carbon ring.
Bronze brushes are a must for my process.
Have a great night all.