I've also used the 130gn Speer spitzer in my 7mm-08 with excellent results at ranges from 50 to 250 metres.
It appears that the .270 WSM has about a 150 fps velocity advantage over the venerable .270 Winchester.
In 1986 Thompson/Center included it in their Contender line, both handgun and carbine.
For extended range conditions such as open country in the mountains or on the plains you should sight-in your rifle to zero at 200 metres or more.
Scope mounts pose no problem since the action is the Mark X Mauser.
It is a sloppy practice to fit Weaver rings in a 1913 rail because round recoil lugs aren't a snug fit in a square slot.
The Mark V's high Monte-Carlo cheekpiece has a pronounced slant and has the virtue of recoiling away from the shooter's face during recoil.
The effect of a change of uphill or downhill angle on the bullet's flight path is therefore the same. Newton don't lie.