Re: MRAD vs MOA
First off you said "tactical", if this is going to be a compitition rig for tactical matches I would go mil. The tactical guys speak mills, range mills, and when shooting in teams corrections are called on mills.
That said, I like moa for hunting. I have the npr2 nightforce and it is great to call correction to some one that has moa knobs, which is what most scopes have!
The reasonfor the differing opinion, I have that scope on my hunting gun then it moves to my tactical comp gun. I am shooting a team match here shortly, and he is a strictly tactical guy. He runs mil mil knobs and reticle. It makes communication more difficult. He calls .5 mil and I have to do the math in my head to switch to moa. It's not hard just a little confusing.
So get what fits your game, hunting or tactical comp. By the way most shooting instructors in tactical settings teach mil.
Hope this did not confuse you more