I normally remove the primer using a Lee universal decapping die and then tumble my cases. Only problem is removing the tumbling media from the flash hole in the cases afterward. Someone said they used rice for polishing and cleaning cases. I tried that and it worked pretty good but the dust on the cases and in the tumbler was bad. I threw out the rice. Still going to try some of the NuFinish Car Wax as suggested by Rumbler. It is just me but I don't normally tumble after resizing. I am just paranoid that I may miss some media in the case. Again it is just my paranoia. Both ways work fine.