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.
Sounds resonable...I've been using Ballistol.
The quickest way I've found to clean a bunch of guns is to clean them before a bunch of them get dirty.
I have often wondered about that as well.
Hoppes is fairly mild (and smells great) but at the end of the day it does dissolve lead.(or at least I presume it does)
Ballistol works well for me too,esp with black powder.
I guess light oil cleans out the lead by getting in underneath it rather than dissolving it.
Recently I have tried youngs 303 oil,which is (or was anyway)mildly alkaline,and I don't think is a solvent.
