dialing in moa

[hellbound]

trying to understand difference in scopes. if i chose a second fp scope instead of ffp. when i dial up my elevation in moa does it matter what power i choose to use when i fire. or is the only difference when im using the reticle as a rangefinder by measuring animals with the subtension marks. please help me understand

 

[RioHondoHank]

The power setting has no effect on the elevation and windage knobs. With a second focal plane scope the subtension marks on the reticle are only accurate at one power setting, usually the highest power or shown by a mark on the power scale.