I got a Model 7LS 300 SAUM.I dont need it for nothing.I have all the Big Game rifles I will ever need.

What I would like is something along the lines of a VLS stock a 28 inch stainless bbl in some kind of caliber that would shoot good to 500 or so.Maybe a 257 SAUM with 100 MK or a 6.5 WSM with 140`s.What about the standard 270 WSM with the 135 MK ?