The thing I like about the 7mm RM is it runs 140g and 160g very well with a lot less recoil than a .308" 180g with the same trajectory. My experience with the 140's is limited to one buck but the 160's have been performing well for me since 1982. No experience with my new-to-me .280 Rem but I expect similar results.
The thing I like about the .300MW is a 180g runnning around 3050fps. More recoil but works nicely.
Nothing wrong with the .30-06 and I tend to run 165-168g. That said, my 150g AccuBond antelope load worked fine on my cow last November.
Choose a good bullet and place it well and none will give you any problems.
What I really like about the 7RM is that if your gun will shoot the 140gr. TSX, you can get light recoil coupled with flat trajectory, high speed and deep penetration--it is the best of all worlds. I have noticed that as I have aged, I enjoy the recoil of heavy 338 loads less and less. Prehaps it is simply that I dont shoot them as much as I used to, but I think the older I get, I'll be into using my 7's more and more.
