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I've done the tumble deal with loaded pistol ammo before, but to get excess bullet lube off the case mouths. I would definitely keep the time in a tumbler to an absolute minimum, because the deterent coating on powder will wear away if done to excess. Ask military armorers about ammo the army carries in vehicles for extended periods. I'll bet they get rid of it after a specified time, and for the same reason we shouldn't tumble loaded ammo too long.
As for my rifle ammo, I prep all cases ahead of time, whether I'm going to load them on a single stage press or a Dillon. Size them, tumble to get lube off, then trim and whatever else needs done. Store them in sealed coffee cans to keep beetles & spiders from getting into them and dying or making cobwebs, and they're ready to load when I need them. If I'm going to load 223 on a Dillon, I put a neck size die in station #1 to make certain the neck is round and that there's nothing(like tumbling media)left inside the case or flashhole.
[This message has been edited by flatlander (edited January 21, 2000).]
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