Silver Bullet member
I, as well, call it quits after gray patches are returned. My cleaning rods are all Bore Tech and they've been excellent.
A member on this forum kindly shared his technique and it really works and relatively easy to set up.
The cleaning process is dirty
I would only do this to to "save" a bore, but not as a regular cleaning.
A very good setup but can be simplified. You don't need a stainless rod since the bore crud plates onto the rod and any bare steel welding rod works fine.