I shoot the 180 Bergers in a 7mm STW Rem 700 LA. A Wyatts magazine is box is a cheap modification which gives just enough more magazine length for the Berger 180s. It will keep the 180 Bergers supersionic well over a mile, to 2000 yards at the mile high elevation where I shoot. That rifle with a 29.5" Hart barrel and jewel trigger was made from a donor 7mm Rem Mag 700. About $2000 invested including a Leupold LR scope. I consider it my "best" long range rifle. Better accuracy and wind deflection than my 300 Rum, 338 RUM and 300-378 Wby. Also less recoil.
My best totally stock factory rifle is a 7mm Rem Mag Lardo. Paid $600 and only added a scope. It shoots 168gn Bergers very well at 1000 yards, but doens't have magazine space for the 180's. A Sendero Rem 700 is similar but has engough for the 180's in 700 Magazine with the 7mmWM cartridge. Forget the 7mm WSM
and 7mm SAUM \ in a Win 70 or Rem 700 unless you build it with a long action for shoting the 180's.
The cartridge I'd like in a wildcat made from a 7mm RUM shortened to the same length as the 7mm Rem Mag. for use in a Rem 700 LA, But I'm not interested in the hassles of custom dies and reamers.