On the jbmballistics.com chart, key in your range increments and your zero range. Also, when you Google jbmballistic, the first page to pop up will show JBM Calculations - Trajectory (Simplifed).....click on that and it will take it to a page where you can find you bullet you are looking. Then just fill in all the data it is asking for. Very simple and if you key in your range increments and zero range and velocity of your bullet, it will show the drop, drift at any wind speed you key in. I use 50 yards range increments that way it will show the drop every 50 yards. Best one I have found and very accurate if you know your velocity. It will also show your foot lbs of energy for your yardage
Last edited by Winnie70; 11/08/23.
