PF Bartlien chamber...Cracking?

[Sticks]

Toss up a pic of the brass that's getting marked. I don't see anything that leads me to think it's cracking, but the pics aren't all that great. It looks to me like tool or burr gouge/fouling too.

The growing headspace measurement is interesting. Not sure if that's related. You use the same calipers both times? Got a new set? Interesting to say the least.

Going to be a while before I can get some shots of fired brass. Working out of town, and I don't know that I'll find any. I have only shot maybe 20 rounds since February, and have already processed them.

As for the calipers, same 2 sets, and the same Hornady headspace tool. Fired cases from 4 other rifles measure the same as they always do, just the Bartlien is the one growing. It passed interesting when the ring appeared.