I too get at least .3 MOA from shinny brass.Just makes me feel better knowing it is as clean as it can be.
My rebuttal to the inside neck cases would be what about new brass and factory match ammo?
I am about 60/40 right now towards the SS media. I just like how it can get the primer pockets and insides so clean.
I'd say you've already made up your mind. Answer truthfully: why to you feel the need to "move on" from tumbling? Then order the SS kit and quit looking for justification for your *shiny* fetish.
Tumbling still works just fine for me.



















































