Re: Nightforce reticle question
When it comes to rangefinding (and/or downrange zeroing) with reticles and turrets, it's all based on the most basic form of the mil-ranging equation. This is the 1 i like to memorize as everything else can be derived from it, and it simplifies it all as all 5 variables are now in it, and it makes it easier to see when using multiple reticles. Here it is (" to yards)--
tgt. size (") x range of reticle subtension measurement (usually 100 yds.) / reticle subtension (") / "mil-reading" (decimal equivalent) = range (yds.)
looks complicated but super simple to apply. Hows about a 10" target that occupies 2.4-2 MOA lines. Here it is--
10 x 100 / 2.094 / 2.4 = 200 yds.
Downrange zeroing reference is the same really. This time tgt. size is total bullet drop. Suppose it's 38" at 533 yds., and u want to reference that drop with your 2 MOA reticle--
38 x 100 / 2.094 / x = 533
x= 3.4-2 MOA spacings
Hows about an inch turret system for elevation reference? Same formula--
3800/1.0/x=533
x=7.12 IPHY
The only thing the "mil-ranging formula" doesn't define is downrange zeroing and rangefinding with a ballistic reticle whose subtensions don't repeat. That requires 1 more calc., but the computation is still based on the "mil"-ranging formula.