Well, that makes pretty good sense to me.  I do know that the CCI #34 is the military standard primer, and it has a slightly thicker primer cup which helps to prevent the slam-fire issue.  That said, I may just switch back to using a standard CCI 200 for my Krag loads.  We'll see....  I have all winter to contemplate this, as I'm out of commission for a few months (surgery to my shoulders).