I de-capped the brass and inspected them pretty closely.  Again, no bulging or signs of excess pressure.  However,  I fired 15 rounds and there were three primers that had slightly flattened (a tiny hint of mushrooming).  The cases were all LC 72 except one HXP 77.

Now, I see this often in my 7.5 mm Swiss reloads, and those I reload with Berdan primers, and I attribute it to slightly loose primers.  Again, I never see any other signs of excess pressure.

Do you think these three primers are an indication of a pending problem?  Or is this just because of the "Hot" loads, and possibly slightly loose primers?  FWIW, I always use primer sealant.