Re: Nightforce NP-R2 reticle
Yes, the NXS NP-R2 reticle is calibrated for MOA.
Depending on the scope, at a specified magnification, target can be ranged using this formula: target size in inches ÷ M.O.A. x 100 = range in yards. At least for me it is easier to estimate size of objects in inches than yards, so I think this is quicker and easier for me to range than a mildot...but others would disagree. This really just depends on preference.
On NP-R2, the vertical lines are 2 MOA, the horizontal lines are 5 MOA apart. At least for me, I prefer the NP-R1 reticle because the vertical lines are 1 MOA apart and the windage hashes are 2 MOA apart. Most NXS scopes come standard with 0.25 MOA click values, which makes for easier calculation with NP-R1 reticle. The NP-R1 also allows me to measure objects MOA "size" more accurately because of smaller intervals.
Others complain that the NP-R1 lines are too fine compared to NP-R2, and you may not see the lines as well with dark background and/or moving target. You may already know this but Nightforce scopes are illuminated, so if I have a hard time seeing finer lines of NP-R1, I just turn on the illumination.
I would suggest getting the zero-stop, which stops turning at zero. Although not mentioned on website, this allows you to have 2 zero points. For example, I sighted my scope at 100 yards and set the zero-stop there. Then I sighted my scope at 200 yards, and set the actual 0 number on the turret here.
Please feel free to PM me if you have questions or need further clarification. Good luck choosing.