+1 on both Chuck's and Para's assessment.  All of my brass looks pretty much like yours, and I've reloaded and fired most of my brass in excess of ten times (some closer to 20 loadings).  The biggest problem I'm starting to see is necks cracking and splitting now.  Also, don't confuse a primer that looks like it contacted metal with one that is truly backed out and flattened.  My primers routinely look like they've been hit with a rough faced hammer... but never flatten.  I suspect that this is because my headspace is nice and tight, and the minor pressure that my primers see moves them a hair until they contact the bolt face.

When you start reloading, anneal the necks and shoulders of your brass (heat the neck and shoulder of the brass until the color changes slightly and then allow it to cool).  This will help the brass to stay a little more malleable, and extend the life considerably.  Also, as Chuck mentioned, back your sizing die out 1 turn or more so that you're only neck sizing.  Finally, never exceed established load manual pressures.  I usually stay right about in the middle of the road.  Your Krag should provide another hundred years or more of good clean fun!