Hey guys, I'm starting up a bolt action build and need some advice on the details. I've got a Stiller Precision Tac 300 action on order. What I need guidance in is picking a precision barrel manufacturer and what specs I should look for. It's gonna be a flutted Rem 700 bull barrel in .300 Win Mag. I've picked out the TAC21 chassis system but also want to see other tactical or thumb-hole chassis systems. What I'm needing to know most is a great manufacturer to buy from, barrel length, twist rate and any other details necessary to get the best out of the .300 Win Mag. The barrel will also be wearing a Crux muzzle brake and suppressor.