Your grouping well but 6"'s low @ 25yds.
A few more questions:
Do you know where you're hitting @ 50, 75, 100 yds.?
If your rifle is pre factory bore sighted @ say 75yds, the ball still may be on the rise @ 25yds.
More then likely, you will have to do some site adjustment but this is something that may be of interest if you ever start shooting longer distance.
See where you're hitting @ these longer distances and adjust your sites according.
What is going to be your final 'site in ' distance?
Also, are you just going to target shoot or are you going to deer hunt with your rifle?