Dan Lynch posted some very interesting shootouts some time ago where he fired .357 Mag with 180 grain bullets using lube, powder coating and both at the same time. In short, his conclusion was that lube never hurts accuracy but sometimes helps with it when the bullet is coated.
This got me thinking. We use lube on non-coated bullets to seal the gas behind the bullet and some other more or less mythical or logical reasons. If the coating can remove the need for some of those reasons, but the lube still helps in accuracy, can we isolate those properties and focus on a lube that is specific for coated bullets? For example we must use soft lubes at low velocities because of desired flow properties at low pressures, and hard lubes at high velocities because of higher pressures and higher rotational forces. What if the coating allows us to use hard lube at low velocities for greater accuracy, or vice versa?
Has anyone tried this?
My own tests are limited to the 50/50 beeswax/lithiumgrease formula (Glen Fryxell's lube), but I steadily run it at 2150 fps with a coated 180 gn bullet in .308 Winchester with great results, 0.6 MOA at 100 yards.