My perception is that a 7mm RM with a good recoil pad kicks about the same as a similar (in weight and stock design) 270 Win with an older, harder, or thinner recoil pad. A 7mm RM rifle is fairly common among elk and mule deer hunters and it is often used for pronghorns. To go bigger than a 7mm RM you would really need to look at something like a 300 WM but you do begin to notice a difference in recoil at that level.