RE: Scope Recommendation for CVA Optima Pro
I have used Bushnell Elites on my Ml's and never had a eye relief or other problem to speak of, even when loading max loads. Another to consider with a bit longer eye relief(although Variable ER) is Burris FFII.
My scope is a 3.5x10 and I have never seen the need to go lower in my situation. I like the ability to be at 10 when at the range, although in the field it has never been used. However it really depends on your situation.