Here is what I did.
Stiller Tac 338-$950
20 MOA rail and 30 MM rings-$200
Custom Benchmark Barrel with deep flutes-$400
Seekins bottom metal with one extra mag-$400
Add a little for all the smith work ( $400) and it comes out to a little over $3000 but I have exactly what I want.
I would only go with a custom action for a 338 lapua build. More bang for your buck there. Good luck