Looks fine. I quite often find as you increase the charge the group tightens up. I would be inclined to find out what near max is first, you will start seeing an extractor imprint on the head of the brass and the bolt will become tighter to lift. At this point or just before is generally when the magic starts happening.
Stated book maximum is only a guide as some rifles may reach this a lot earlier and the manufacturer needs to cover there arse. Its not unusual for a good load to be a couple of grains over.
It's great to ask others on here if they are using the same combo you want to use so to give a guide.
Enjoy
Bookmarks