I was wondering. Mica can be used as a case lube and mica (maybe different) is used in toothpaste to polish teeth, if you could put a teaspoon with crushed corn cob or walnut hulls and end up with polished and lubed brass? Or one heck of a mess. I will try when I get time and some mica. Comments and opinions!

I was told to use about a teaspoon of Bon Ami, its a powder like comit but does not scratch.
Ive been using it for about 2 months works great but it is alil dusty. I picked mine up in the grocery store in the cleaning isle,walmart did not have it.