Detonation on the bullets? No worries there. 3.6 grains of Clays is the lowest I load. Cases come out clean, no abnormal soot.
You are not understanding my post. Too little powder may detonate rather than burn. This creates a pressure spike rather than a pressure curve. A moderate low pressure load should leave soot on the case body. In my case, there was no soot whatsoever. The case looked like a mirror coming out of the chamber after having been fired, but the primer was pierced. A slightly heavier load sooted-up the case body and everything was fine. The report was different as well.