The first question I'd ask is if you can quantify "shot good right from the get go".
What exactly is good?
If you're talking 1/2 MOA at say 600yds, then I'd say you're doing pretty good. Try pushing it out to 800 then 1000yds, and see what happens. If it holds at the longer ranges, well don't mess with a good thing.
If you're talking 1MOA or more at 600yds, then there's a bit of room for improvement, and you might want to play around with it to see if you can do better.
Then again maybe that's plenty good for what you need.
Then again if your not planning on shooting all that far maybe yo