I am in a "BIG" learning curve on rifle reloading and was watching a video on how to lube rifle cases. This guy used synthetic motor oil. He poured some in a small container then put the case mouth in it. He then put the case in the shell holder on his press and lightly rubbed his fingers down the side of the case. He said he only lubed one case out of ten. I think you have to tumble them again to get the lube off. I might give that a try. I have found out that there is a lot of ways to lube cases and a lot of them are good. Don
PS I like the graphite idea too. It's only money.