Re: ffp- worth the money?
You do not "need" a ffp scope.
They didn't use them in sniping in the Civil war, WW 1, WW 2, Korea, Vietnam, Grenada or Gulf War 1.
I "want" a FFP scope, therefore I have one and am getting another. They make a tremendous amount of sense for a "working" rifle as in le/military sniping and they have many benefits.
Nightforce sells far more SFP scopes than they do FFP scopes.
If you are primarily hunting with your rifle and your target is going to be whitetail deer, find out what your maximum point blank range is for the load you are using. Zero at the range indicated to achieve maximum point blank range then hold dead on and shoot. I am not going to go into the whole deal, but your target area on a whitetail deer is approximately 9 inches, depending on your load, if you zero at 200 yards, you can probably safely shoot out to 400 yards or so and fall within that 9 inch circle.
As far as adjusting your scope in the field, it matters not if it is FFP or SFP and it does not matter what power you are on. If your comeups are 4 clicks to make the shot at a given range, they are 4 clicks.
Now, one of the advantages of the FFP mil/mil scope is this example:
With my rifle and a 100 yard zero and the 168 grain OTM AE load , my come ups at 200 yards is 4 clicks or .4 mil. I have the Falcon EMD reticle, I can either dial in 4 clicks (since my adjustments are .1 mil) or I can use the first hash mark, which is actually .5 mil, (close enough) and hold over on ANY power.
You can use holdovers on your SFP scope, but you either have to map it at different powers or use the power that the mil is correct.