Seems to me the main thing is how clean it is pre treatment. It's gotta be squeeky clean. Bore scope is a real help in this phase.
I use a slotted jag with a strip of cleaning patch that fits loosly. I dip before each pass, but let the excess run back into the bottle.
I tape a shotshell hull to the barrel when coming in from the chamber. That keeps stuff from running out on the floor.
From the muzzle, I jam a cloth in the chamber to keep product from running into the action.
I use a padded vice to hold the gun barrel up or barrel down.
I let it dry well before shooting.
The bore seems to get easier to clean after several shoot and clean cycles.
Most of my rifles now clean easily with a few Patch Out passes. If there is residual fouling seen thru the scope, a soaking for a few hours usually does the trick.
DF
Last edited by Dirtfarmer; 05/27/20.
