Even with carbide dies, a little lube helps. joem1945 uses prepped cases. those won't need any lube.
I use unsized cases when I load. simply spray a little Dillon or other brand spray lube on a
few cases. You don't have to spray them all, just a few on top.
Start your collator, and the action of the collator will spread a very thin layer oflube to all your cases.
While not required for carbide dies, it does make the resizing easier since there is much less friction to deal with.
No Collator? Put your cases in a container, spray a little lube on top, and roll around. This action gets enough lube on the cases to reduce the friction.
I have only done this for pistol, I don't currently load rifle.
Opps, just saw Jmorris reply. Works just as well.