This topic has taught me much about cleaning regimens.
First and foremost, I keep brass implements out of the bore from now on.
When cleaning, Bore Foam (I use Outer's Gunslick foam) works, period; and all that's needed after foaming is patching (and in a fit of anal miscomprehension, even though I know better, I do it anyway), a last step putting down a layer of oil for a moisture and oxygen barrier.
The cleaning agent does the work, all that brushes can do well is to apply it more evenly within the bore, and especially, the grooves. When using a brush for solvent application, a nylon brush works at least as well as a metallic one, and leaves no 'false blue' on the patches.
Since the solvent does the work, using larger patches moves more solvent into and out of the bore. The way I use larger patches is to use a steel slotted tip with the longest shank I can find; this permits more patch material to into the bore without jamming.
I know I'm done when the dry patches come out with only light staining. An utterly clean patch indicates only one thing, overcleaning.
Obviously, brushes don't work as well with foam, so I skip using them.
My musings about using bore butter as a long term bore protectant are over the top. Oil should be plenty.
Most of all, LL's and Chad's admonitions about letting the rifle's performance dictate if and when cleaning could actually be helpful need to be my (only) guide about such matters.
The exceptions I trust are about muzzleloaders and corrosive surplus (Russian, anybody?) ammunition. This is driven home by the Russian arsenal practice of backboring the muzzle ends of barrels to compensate for cleaning rod wear. The corrosive ammo's need for frequent cleaning leads to this, and also proves the truth about most bore damage coming from cleaning.
I especially like the idea that if it isn't a bullet, its presence in the bore may not be productive.
Greg