The old advice, from the old days when all we had were CC bullets(and the only premiums available were Noslers and a few Bitterroots,if you could get them)was that 160's were best for all-round in the 7 RM.Also, Remington factory 150 CoreLokts killed a lot of game.
That may be true today as well, but if you watch your bullet construction, today you can use almost any weight in a 7RM,from a tough 120 to a 175 and do pretty good.Last year there was a fellow on here who posted pics of elk he killed with the 120TTSX from, I think a 7MM WSM.Same same.
Nice thing about the 7RM is that you get good velocity with about any bullet weight without a lot of recoil.If anything the cartridge is better now than when it came out,thanks to all the great bullets.Other 7mm's with similar capacity do as well.