All the rage these days seems to be that the brass must be squeeky clean, in and out.
I have been reloading for 50+ years now, and I don't know what we did without this stuff, lol:
Most reloaders did not tumble their brass in anything at all.
If we had a badly tarnished case, we cleaned it with fine steel wool or 1200 grit wet-or-dry paper.
I will assure you, no one but you will ever know whether the inside of the loaded case is shiny or not.
And it will have exactly "zero" effect on your load's accuracy or performance.
Personally, I have much better things to do with my time than "wet" cleaning my cases so they shine inside.
FWIW, I do tumble them to clean the outside, but not every time they are fired. [more like every 3rd or 4th firing.]
But, if it makes you feel good to have that case shiny inside...go for it!!
Regards, Eagleye.