Price out an Elite 4200 mildot, my attitude is that if you are looking at 6x on the bottom end you may as well have 24x on the top, I use mine at 24x all the time glassing rocks and hard to see in terrain.
I had to scope over 20 rifles in a couple of month period so I was getting really good package deal prices from FOX Optics. I used it as a chance to try several good scopes to see which I liked the best. I have a Nikon 6-18x on my CZ HM2, the field of view and night time light transmission IMO are both better on the Elite 4200's.
Call Fox Optics, he'll hook you up with the 4200 for roughly what the Nikon is, you'll never regret that.