Regarding BeenThereDoneThat with the alternative methods, that probably applies to 98% of us that started reloading before there was an Internet ... and to 96% of the more recent crowd
I, too, tried the phosphoric acid dip to brighten the cases, the detergent, etc, etc, etc ... and speaking of exposures ... I think that I'd be a lot more afraid of Pb exposure drying my cases in the same oven that makes my dinner, than I would in almost any other scenario except maybe the one where you wash the brass in the dishwasher
I think that I have that same Berry's tumbler ... if you go that route, buy yourself a little programmable appliance timer that will let you set it for 6-9 hours so that it has an auto-off mode ... that way you don't have to worry about being home when it finishes.
Saands
ps ... I never got around to trying diet Coke as a brass rinse ... IIRC it has a pretty good charge of phosphoric acid in it .... and it doesn't leave things sticky like the regular Coke would
On second thought, the tumbler works GREAT!