Seeking empirical evidence to support or refute powder/seating-depth nodes

Empirical evidence:
This is not empirical evidence refuting seating depth nodes. They clearly stated they didn't play with seating depths and they were referring to accuracy not precision.

Here is some empirical evidence supporting seating depth nodes:
(note: queued up to the seating depth part so you dont have to watch the full thing on a different subject)
 
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