Question about the discoloration on the interior of this brass

[USMC88-93]

It the different color discoloration on the interior of this brass due to the different chemical nature of the powders used. Some are greenish, some are rust, some are charcoal colored on the interior of the case neck.

Is it possibly from some having corrosive primers and others not?

How clean do you need to worry about getting the interior of your brass when they finally get reloaded.

These were all thrown in a tumbler in corn cob (many months ago), but they all still had their primers in. For the most part they all still have the primers in as I only recently have began to buy the reloading equipment I need to de prime and resize etc etc.....
http://img.photobucket.com/albums/v651/PhotoTWB/brassneck.jpg
http://img.photobucket.com/albums/v651/PhotoTWB/cleanedcases.jpg

[markm]

Other than Dirt/Mud/sand, I don't worry about anything on the inside.

[toddackerman]

Other than Dirt/Mud/sand, I don't worry about anything on the inside.

Is some of this commercially processed brass? Looks like tumbling rouge to me, but I'm like Mark...don't care about anything inside the case as long as it's not dirt, mud, sand or H2O.

[markm]

Now that I can actually see your pics....

That brass looks great to me. I'd load that without a doubt all day long. :)