Yes, welcome to the "wonderful world of subtension", and it's practical application for bullet trajectories, both vertically AND horizontally. I never sacrifice point blank range for a scope reticles long-range zeros. Point blank range (conservatively for about 3/4th's target size only) is designed to be applied quickly to the longest range possible, so no time-consuming guesswork has to be entered into the equation. After that, I simply run a ballistics program for my load noting BDC zeros for each stadia line/dot (subtensions must be known either from the optic's catalog or measured), test it at the distances, noting correction in MOA, rerun the program changing BC or MV until I get the best "fit", then recalc. in 50 or 100 yd. intervals for both windage and elevation. Put a sticker in the Butler Creek scope cap cover efficiently referenced when needed. like this--
(600-yd. dope is 3 units down + 3 MOA turret clicks).
There are other systems but this is the one I use most of the time.
(600-yd. dope is 3 units down + 3 MOA turret clicks).
There are other systems but this is the one I use most of the time.