Guys, picked up 150 30-06 brass, mixed head stamps but mostly remington. Was somewhat clean just dull, so I figured ill just throw em in the tumbler when I get home. Started with corncob and it wouldn't touch it. Switched out corncob for walnut media and after 6 hours in the tumbler, it's a little shinier (yes I'm one of those "like my brass to look like new" guys) but not even CLOSE to looking new like the .35 I did this week. Just for the hell of it I took a case and wiped it down with brasso (no I'm not using brasso I was just curious) and the case looks brand spankin new. Any suggestions? Oh, by the wat I added nu-finish about an hour ago, no noticeable difference.