From 46.1 to 46.7 your group centers are moving in a downward slope, and they are all clocking to a slightly different angle from POA.
46.3 and 46.5 are really close as far as the angle, but the group center is falling.
The loads that plateau when the barrel is traveling up are the ones to chase as they are the most consistent. You can Look up "positive compensation" when you have lots of time. That subject takes pages to discuss and it has been a long time since I dove into it. But in a nut shell, gravity can work with you when the barrel is at the top of it's travel. It does the opposite when at the bottom of it's travel.
Also, the loads at the upper range of pressure are almost universally narrow and finicky to tune. In the summer heat you will likely regret using them.