Quote Originally Posted by trappst
The One Shot really does help keep the rust in check.
+1 - The Hornady One Shot is an areosol wax based lube and gets along fine with imperial sizing wax. It ain't great for lubing cases but it does prevent rust and doesn't cause problems with the Imperial (if that is what you use for sizing).

Petrolium based rust preventers and wax can make a big gooey mess when you combine them (especially inside the barrel of a black powder gun!! - but does a similar thing