I don't use a bore solvent anymore, after seeing many a double with loose ribs. A lead disolving solvent will attack the solder joints of a double if repeatedly used and allowed to come in contact with the solder joints, usually this means the muzzle and the the first foot of the ribs that it wicks into.
I've been using RemOil as the bore solvent.
For bore brushing, I put a bronze brush on the end of a fuzzy fleece rod (Bore Runner), spray the bore with RemOil, give it a few minutes, then run the brush equipped fleece rod a few times.
I also use RemOil to clean the action on papertowel wipes or with a small brush.
