Sorry, Pat that's with an American-style second focal plane scope only. With a European style first focal plane scope the reticule size varies with magnification. Thats one of the major differences between the two if you're deciding on a model .
Both have advantages, the second focal plane has a fixed reticule post thickness as seen, but the first focal plane has a fixed relationship between the reticule gradations & the target no matter what magnification is used. That's why the "Shepherd" scopes have the one shot zero ability they have 2 reticules, one in the first & one in the second focal plane.
Allan Quatermain: “Automatic rifles. Who in God's name has automatic rifles”?
Elderly Hunter: “That's dashed unsporting. Probably Belgium.”