You know I was showing mossy my stoney point guauge and kept getting inconsistent readings for the first time in years. And looked like a horses ass. It was a 25-06 and using 85gr and 115gr I think BT. I kept getting 3.11" COL , but he kept getting 3.22". I am not sure if there was a burr inside the chamber or the case. I was using a cleaning rod to put opposite pressure to increase my sensitivity. So I finally just pushed the bullet into the rifling until it stopped. And was matching what he saw. Since 3.2" is SAAMI specs, I suspect, 3.22" was the correct number.

First time I had inconsistent measurements.