I have tried the one shot on some .308 brass, and using more than I would expect to need, these cases went through the die well enough. I also have some Mink Oil, and that worked out okay. I have ordered some Imperial, and some RCBS 2, and will (when my new shell holder arrives, ) run a comparison of all of these lubricants on the .338 brass, and post the results here.
RCBS has chimed in with this information, they now recommend their #48 Shell Holder as the best for the .338 Lapua Mag, and their lube as being a little better than one shot. (showing my shocked face )