Okay folks, I cannot make up my mind here. I am building a 7saum (or maybe 7wsm) for long range shooting. I want to target shoot north of 1k, and will be shooting 180s, either the Bergers or SMKs. I am kind of an accuracy freak so I want the best groups possible. Unfortunately I am also on a budget, which is why I am building on a savage...well and because its fun.....anyway I can get both of these barrels chambered and threaded for my savage for about the same price. I have read everything I can find about these barrels on here and other boards, and I still can't make up my mind. Brux is cut rifled 4 groove, benchmark is button rifled 3 groove or 5r. I want the best accuracy I can get. Any opinions and/or advice?