I just researched this a lot and ended up buying a 270 WSM !! I whitetail hunt mostly so I really compared 140 grain bullets from Federal, Winchester, and Remington ! The 270 wsm "on paper" shoots a little flatter and has a little more energy down range !! I don't know about the real world much but @300 yards my gun has less drop than my buddy's 7 mag...........but it's not a whole lot .....probably 2" of difference !! I think he was shooting 140's like me but he may not have been............I'll have to ask him !!