This is genuine, not snarky. Good on ya mate.
I however have experienced this numerous times. Through the course of testing the 26-Nosler "wildcats"/variants with 7 loads for each bullet and 6 or more bullets per caliber with 4 calibers that's 7*6*4 = 168 minimum different loads. I see it often.
Maybe its a "magnum" thing?
How do the spreads correlate to the changes is mv? Magnums can have big spreads outside of a node.