Depends on the 223.
For something carried a lot, i've been moving towards the lightest, lowest magnification optics that will get the job done.
For a bench gun, carry 40m from the truck rifle, then 12x, 16x 20x on the top end, certainly lets you see a little easier
Not a Nikon rifle scope fan though, haven't been impressed with their glass, the weight and most of their reticles. Or the reviews.