Hand Sanitizer
This is the best stuff ever for cleaning off case lube. Of course the active ingrediant is about 65% alcolhol. The inactive ingrediants are Water, Glycerin, Isopropyl Myristate, Propylene Glycol, Tocopheryl Acetate, Aminomethyl Propanol, Carbomer, Fragrance (parfum).
I pretty much do this the same way I lube. I soak a Water Wiz refill pad ($2 from Home Depot) with the hand sanitizer and roll the casings in/on it. I then roll them again on a paper towel. The feel smooth, from the glycerin I suspect, but no longer oily or greasy.
I've NEVER had a jam... but then everything else about my reloads is perfect.
So there you have it, no longer a secret.