im no seasoned veteran reloader like lots here, but what i do, and its worked for me so far. I do my resizing before i clean my spent brass. stand all of them up in a reloading tray, one to one and a half sprays on one side, turn tray 180 degrees, and another one to one and a half sprays, trying to hit all casses evenly, at about a 45 degree angle. Only thing i'm currently full length sizing is .223, using Lee FL die. i neck size only .22-250 with the same process, and Lee collet die. After size/deprime, i trim, and ream primer pockets as needed. Then i send them to the vibratory tumbler for an hour or so. a quick poke into the flash hole with a sharp pick, and quick turn with primer pocket cleaner, theyre ready to go. it seems to work well enough for me, as i often write on the loaded rounds with a sharpie, to help keep different loads in order, and theres never any sharpie left when the cases come out of the tumbler.