If you’re building one, I’d go with a 300 Win myself but use a 3.6+ magazine. The standard 300 Win reamer let’s you sit out a bullet pretty far as is. In the few we’ve used 200 ABs out at 3.575” allow 2950-3050 depending on loads.
300 Wby is a great one too, but it’s hard to hate on the amount of great brass for the 300 Win.
