Easiest way for me to get my head around it was going from 100meters/yards and going to 1000m/y
1mil @ 100m is 10cm. Mil is divided into 0.1 clicks so 1 click equals 1 cm @ 100m. At every 100m 1mil will add another 10cm (1mil @ 1000m will be 100cm, 1 click will equal 10cm @ 1000m). This makes the math easy as it is a base 10 system
1moa @ 100y is near 1inch to simplify (2.54cm). MOA is divided into 0.25 clicks so 1 click equals 0.635cm @ 100y ( 1moa @ 1000y will be 10.5 inch, 1 click will equal 2.63 inch @ 1000y). Moa is more accurate, however to math needed to call correction as its in 1/4inch takes my brain a while
The thing i got hung up on while reading up on things was that 1Mil/Moa does not change but the measurement of that 1mil/moa does.
Best thing to do with a dial scope is to get and app like Strelok and produce a gun profile. This will give you a guide as to what adjustments to dial for certain ranges, be sure to verify/change these if necessary. However you can with a first focal plane scope you can use the stadia to hold as it will have Mils marked on the reticle. Good habit to do is dial for distance, hold for wind.
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