Switched from a Leupold Mark 4 10X40 M3 to a Nightforce NXS 5.5-22X56 that I bought from a friend of mine. Going to zero it today, the Leupold was fairly easy to use w/ the 1MOA knobs and BDC built into the turrets. I'll just have to get used to this one. It felt REAL heavy in my hands, but does not seem that heavy on the rifle. Here is a lil before and after pic.