what does this target tell the experienced

[Kurt]

What I see in that target is that you have a pretty good load going for a 300 yard range and a 10" bull.
Throw away hole 5&10 your under a MOA by estimate.
Looking at the shot placements 1&2 3&4 7-8-6 I call that more of a sighting error that Rick is talking about especially using the post if that is what your using this can also happen with a round aperture to small.
I cant see a problem with a load having a vertical problem in the order of those shots.
I don't know if you have ever shot a service rifle, but I would try a post that matches the diameter of the target and hold that fine white line Rick is talking about, The better you vision the closer you can hold that post on a slightly blurred bull.
The post diameter matching the bull close will eliminate the horizontal barring wind conditions also the vertical in a no wind condition.

"being a right handed shooter is a slight pull to the right normal?"
I would say you would push it right more by tightning the grip at the break then a pull left.