People often get confused on the OCW method and go straight to the group that is the smallest and call that the OCW. That's not the way OCW works, though you can often have small groups right around the OCW mark.
It's sort of tough to tell based on the targets and not being able to measure it, but it looks to me like 44.5g or so would be about your OCW.
I say that because finding your OCW is not about the size of the group, but about finding a consistant POI across the widest charge weight difference. Both the 44.4 and the 44.7g groups had a similar POI, and the 44.1 wasn't that far off it either once you triangulate the 3 shots and call the middle of that your POI.
If you are looking to shoot your OCW, I would load up a bunch of rounds at the 44.5g weight and start messing with the OAL and see if that tightens the group. I'll bet you have some good results there, and can not worry too much if you accidently throw an extra .1 or .2 of powder every once in a while or if it's colder or hotter out. The POI should remain the same.
