I am presently building a wildcat 25-284. Using Shehane dimensions as a start, but I plan on pushing the shoulder back 0.1" to allow for 135gr bergers in a SA magazine. Should be able to push them past 3000fps. For you I would just skip the shoulder bump. Use a 7.5 twist barrel. Expect up...
My Remington 700 SPS Varmint is a 1 in 9.125" twist. Shoots the 95gr SMK's fine, but LOVES Berger 95gr Classic Hunters. I get 1/4-1/3 MOA groups at 200yds consistently.