Sniffer I would not be to concerned about the mythical sweetspot. Max. Preasure varies from one powder/bullet/charge weight. From the info I have read and the chrono/ shooting I have done anywhere from 10" to 14" is where you might hit a sweetspot for the combination of the above you are using. The sweetspot being where max velocity and preasure meet.
From what I have observed it has far less affect on shooters performance than one might think or expect. In testing you might find a flatter shooter may or may not result in better scores. It should but
it might not.
For most of the shooters I have met the chase is more fun then reaching whatever goal you are attempting to achieve. The chase involves copious amounts of money, time and experimenting. I find by the time I think I got one thing right the goal changes or I forget what I was trying to achieve.
Having added a hydraulic buffer, a Davinci Comp, a heavier then lighter buffer spring and a 10" barrel my Raven9 now shoots dead flat reliably.
Great, but then I read about the benefits of a real light load for shooting steel and the quest begins again.....
This whole subject is a Sales & Marketing Manager's dream, a perfect storm if you will. "What wins on Sunday sells on Monday" None of us are immune and there is no cure.
Take Care
Bob