I decap first, then add my warm water, lemishine, and American Dawn liquid dish soap along with my pins and brass and let it run. Usually an hour or two works great. Drain most of the dirty water, add some fresh water, run a few more minutes, then strain out into a bucket. Use a magnet to remove the pins, towel dry, then either sunshine, dehydrator, or low oven to dry. Works fantastic, so much cleaner than vibratory tumbler plus the primer pockets and the inside of the brass gets super clean.
One thing I heard was that when new, run your pins by themselves to knock off any sharp edges, not sure it makes any difference but I did it anyway.