trajectory

Hi all, Can I ask for your wisdom please... I have a Meopta ZD 3-12x50 w/ ballistic turrets which feature twin vertical scales- a) distance (in 25m intervals from 100-425m) based on .308 168gr and b) clicks (.5 MOA)- my preference is for the distance scale utilised alongside a range finder. I...

Any tips on range estimating. I have just been told try one eye closed with a finger on target. Close the eye then with the other there will be a gap, estimate the gap measurement between both positions and multiply by 8 (or 10) and that will be the range. I've yet to try, anything similar out...