Ok are we speaking of break free clp as the OP referred to?
Because I know break free will not penetrate your primers and kill your rounds.
I do know that wd40 for guns is a big nogo as it will, as it is a penetrating oil.
Vegetable oils will harden and gum up whatever you use them on.
Graphite is fine but wears off fairly easy with use.
Some guns have been made so they could be fired dry.
See Glock.
(Edit)
I do not know how mineral oil aka baby oil would work however, I guess Ima do some looking.
edit on 31-1-2012 by g146541 because: add