UPDATE. with some frustration at myself. So, I took the rifle out today, had 20 rounds, 10 each at 45.2, and 46.0.
Sky cover: cloudy/foggy
Wind: from 3 0'clock at about 7mph ( a guess, didn't feel the wind when placing the target, but it was definitely there when I retrieved the 300 yard target)
Distance: 200 and 300 yards.
On both targets, the left is 45.2gr, and the right is 46.0gr
Here's my 200 yard target:
This was mostly on me, I wasn't waiting that much between shots (Dr. Vette, I got an update on your post between shooting 200 and 300 yards) There are 2 called fliers, one on each target, because, well, I was an idiot and shot the wrong target once with each load....hooray for being anxious to shoot and making stupid mistakes!
For judging drop, I used an estimate MV of 2850, and dialed up 3.8 MOA from my 100 yard zero...seems pretty close
anyway, at 300, there were more definite results:
The 45.2 has 4 shots I can see, not actually sure where the 5th shot is
annoyed at that one. POA was the bottom right corner of the square.
the 46.0 target has a nice horizontal string, except that one shot that his higher up, when these two old timers came in and slammed the door on the range right as I was squeezing the trigger. POA was the bottom left corner of the square. I definitely need more practice judging and adjusting for wind