Re: Expectation management and load development.
I have a friend who is a successful competition shooter who is always giving me grief for worrying about fractions at 100 on my hunting rifle. His advice to shoot moa sized targets at long range has simplified my thinking. 1/2" at 100 is only 4" at 800- you're still well inside the vitals with it.
If you ask me, for hunting, the most important thing is to see where the cold bore hits are at 800, then you can worry about the groups.
Now, if this is also a competition gun, then you gotta do some more obsessing! ;)
That setup looks like it should be capable of some pretty tight groups.