I was recently given four boxes of ancient T/C .54 caliber Maxi Balls lubed with what I assume is Bore Butter. It is hard as chalk. I'm trying to soften it and remove it but not enjoying the best success. I've tried soaking them in a water and Dawn solution for three days now, it has softened up a bit but is still a PITA to remove. So, all you chemists out there, what to try next?