Thank you, Paul.
Another sign of increasing pressure that I was talking about is impression of the breach face. At this velocity you can see it on almost all primers. Minor point - primer #2 in HS-6 series may not be as flat as it seems. Some of the cases in my S&B lot have no bevel on the primer pocket; this is one of them. Without a bevel primers
look flatter then they are.
Agree with you that all these signs ain't terribly impressive. I suppose it's a good thing.
Mike