Please have patience and mercy on an inexperienced second focal plane shooter. I am getting into long range shooting. Understand most basics but the whole second focal plane thing has me confused when I hear it only works on one particular power. With the new Atacr scope, based on my velocity and bullet ballistic coeffient I can run a chart to give me the drop and allow me to figure out how many clicks of moa to be on target at the ranges. I'm confused about second focal plane? Does this mean my chart will only work when the scope is on 22 power? What if I want to dial up a shot on 8 power?