Just a few observations...
Any of the loads you have tried will do the job. You won't miss a game animal with any of them, so pick one, load up a box and go kill stuff. You don't have to finish load development before you can hunt with this gun.
The hunting trip does not mean the load development is over. You have the rest of the barrel life for that, so you can keep on trying new parts of the recipe to your heart's content.
In addition to varying seating depth, try different primers. You didn't mention what you are using, but sometimes a different primer makes a difference.
