I clean the carbon ring using boretech C4 with a chamber mop or q-tip style long swab every 200 rounds or so. I do not solvent clean the bore any longer, as I read an article by one of the folks at VGW saying he lets the bore "season" with the lubricants. Only a few dry patches down the bore after every outing.
I do pull a couple of dry patches through the wet C4 chamber and all the way to the muzzle, but supposedly, that does not disturb the curing that is going on.
I started this experiment over 6 months ago, probably 800+ rounds ago, and just shot my all-time best series of groupings last outing, averaging .2607 for 6 x 5 @50 yards. (I record all results from every session.)
So I can at least say that the results are not negative and may contribute to accuracy improvement. Only higher-end ammo (SK, Eley, Lapua) through that Krieger rimfire 22lr barrel.