I recently switched to a new reloading press and new die sets as well.
The new setup is a Mark7 Apex10 with Lyman Pro Series dies.

When I started reloading 300 Blackout again this week on the new setup, I ran into a problem that I have previously run into: the completed cartridges would not fit properly into my case gauges.

Only the Sheridan case gauge could show me the source of the problem!
And yes, Lyman is sending me a new die.