There is always a better one:( depending on the budget.:(
Zeiss are good scopes with very good optics and not the best of reticles, in my opinion. They are also a little bit shy on range of elevation adjustment. Something like 45 MOA full range. Therefore it will, in my way of thinking, require mounting so that as much the adjustment as possible is available to you. You will want to center the scope so at center windage is pretty much on target windage wise.
But, w/a 300 RUM this will most probably be a non issue.....
I may be the slowest guy on the mountain . . . . but . . . . I'm on the mountain!