I first read about using stainless media for cleaning brass about 1990. I used it for several years and it did a great job of cleaning and polishing the brass. Drying the cleaned brass was no problem...I just laid it out on pie plates in the sun to dry. It didn't take long to dry, an hour or two.
After doing this for several months I began to notice some things that caused me some concern...split necks. I began to experience some cracks in necks of 30-06 and 45-70 brass. So I tried annealing the necks to stop this problem. It helped, but didn't end the cracks.
I think that the stainless media tends to work stress the brass and perhaps thin it a bit. I would only use it for an hour or two now, and only if the brass were really cruddy. I think that it does shorten case life.
Bob llB50