Ryan: Your rifle is still shooting to one POI for 2 shots and a different POI for one shot. And since this is a completely different load than the first target you posted, this leads me to think that the shift in POI is not caused by inconsistency in your loads, but by something shifting in your barrel to stock contact points as your barrel heats up. In any case, your rifle almost never shoots three shots to the same POI, there is always one that seems to be leaving the barrel with different harmonics than the other two. So something is causing your barrel vibration to change.
Next time you shoot, number your shots 1, 2, 3 so that we can see which shot is straying from the flock.
I do record that in a notebook; I'll have to mark the target when I get home and post that. I do have it back in a stock that has the factory stock pressure points a couple inches in front of the receiver. So, it could be that, but it would also do that in my other stock where I'd cut the pressure points out. When I shoot my test loads round robin, I'll always go in one direction through the different loads, and then reverse the direction through the loads after cooling. That way I'm not always shooting load #1 completely cool and load #5 completely warm. I guess this means load #3 is always warm, but that's the most even way I could think of doing it without letting the barrel cool completely between every single shot.