I make .22-250 and 6mm International from .30-06 and .35 Whelen (and a few others less extreme); that's quite a transfomation and it requires an excellant lube to accomplish. I've found that case lube is demanding but it's a lot less mysterious than it may seem. I want something easy to apply and easy to remove from my fingers and cases without making a mess on everything around like spays do.
I like to use finger applied Lee, RCBS, Imperial and Unique conventional lubes, no spray and no pads. I've happily used Kiwi/Esquire neutral shoe wax (colors work too but they stained my fingers!), Kiwi "Mink Oil", Sno-Seal boot treatment, paste bowling alley/floor waxes and toilet bowl wax sealing rings, ditto nursing mother's nipple balms (lanolin), Chap-Stick, electical cable pulling lube (a yellow soap) and Starbrite's teflon loaded boat trailer hitch lube as substitutes for conventional sizing lubes. Those have all worked fine and nothing has ever squeeked if it was properly applied. (STP oil treatment and a couple of other oils work too but they're really messy and demanding to clean from hands and fingers, I'll never use any petroleum product again!)