I've always used second focal plane scopes, but did not really know that there was a different type with the first focal plane ones. https://www.thearmorylife.com/whats-first-vs-second-focal-plane/ It looks like the FFP ones are better for guys who want to spend more on their scope and do longer range shooting? Do I also understand that it would be better for on the fly range finding since you can use the size of the reticle as a reference as you zoom in and up in magnification?