JMO, I've been reloading for about 40yrs, everybody has their own way of doing things, a lot of the old timers when I was in my 20's who taught me how to reload, these guys were competition shooters back then, wet tumbling did not exist! neither did SS pins! most of these guys used either corn cob or crushed walnut and Jewlers rouge in the mix, I know their thoughts were to keep some of the carbon fouling on the inside of the case mouths and primer pockets, carbon acts as a lubricant, they would clean the cases just enough on the outsides to be clean and remove any fouling or soot, their reasoning was to keep from damaging their dies, I know cleaning methods have come a long way since then, I used this type of cleaning method for most of my reloading up until a few years ago, I even used SS pins in the media with ROOSTER BRIGHT, about 3yrs ago I purchased a wet tumbler using only a squirt of Dawn and SS pins, there's no going back to the old way of cleaning my brass, using the timer on my tumbler I can control how much carbon is removed from my brass! gone are the days of having to clean out the dust left behind and media stuck in the flash holes of my brass, I'm not worried about my brass being peened by the pins because I anneal my brass after its cleaned, every time, were talkin rifle cases here, pistol cases clean them clean, I don't worry about pistol cases I pick up enough 9mm and 223/5.56 cases off the range I'll never have to buy any! my2ct.