Re: cleaning cases
Clean and shiny are two different things.
IMHO, shiny only helps the ego, clean helps the dies and chamber.
IMHO, the primary functional purpose of cleaning brass is to eliminate the transfer of gunk from the cases to the dies and chamber. This gunk can cause abrasion, wear, and adversely affect the function and operation of the resizing die and firearm.
Simple works. A 3M Scotchbrite pad and some Dawn dish detergent will get off the majority of the crud. What won't transfer during the cleaning process will probably likewise not transfer during subsequent operations. Rinse, dry, and proceed with the reloading process.
This can be a tedious process, and getting/using a tumbler and case cleaning media should be high on your list of priorities.
Any cleaner which leaves a black or blue/green residue (of its own, not the carbon from the necks, etc.) is chemically attacking the brass. You don't want to do that, as it's relatively likely that there's ammonia at work somewhere in this process, and ammonia is considered harmful to cartridge casings, being accused of making them brittle.
Greg