I've seen lots of 7mm-08's kill elk so why not the 7mm mauser,you buy a 175 gr load for it I'm sure it's no bean feild shooter but aought to be plenty for elk out to 200.
I have a 7mm-08 modle seven that I plan on using as a saddle carbine,I'm using 139gr Hornady Light Mags.It should work fine.Remeber the 7mm Mauser was once used to kill a few elephants.
I think bullet weights from 140-to-175 should work.