Re: What barrel for new build?
Barrel selection is one of my favorite things to decide on, and also a headache. There are always the "what ifs."
IF you can get a cut rifled Obermeyer barrel, that would be my first recommendation. The fact is Boots does NOT make a bad barrel. PERIOD. I have one on my 308 and I'm damned near ready to start making some bets at the gun club on who's rifle shoots best.
You absolutely cannot go wrong with another Krieger. You absolutely cannot go wrong with a Bartlein. Same for Rock. I hear wonderful things about Brux. Bottom line, flip a coin.
As to button rifled barrels, I think Hart wins the best reputation blue ribbon, especially in competition shooting. Broughton makes a fine barrel. Don't forget Gary Schneider. McMillan rifles uses Gary's barrels on their rifles, and the polygonal rifling is doing well at the bench.
They will all shoot well but I think some barrels just have an edge. My top 3 choices would be in this order: Obermeyer, Krieger, Hart.