Quote Originally Posted by AB View Post
Stainless steel pin tumbling gives the best cleaning results. If the brass is decapped, it will clean out the primer pockets and flash holes.

I don't think it will solve the problem you describe, though. It is a heck of a process and requires drying time so it's not for every day. I usually put brass I have just picked up through the stainless steel tumbler for the first clean and then use walnut or corncob afterwards.
I wondered where my range brass was going . . .