Heres some helpful tools.
Find the powder used to get the feet per-seconds going.
Click on "Resources" then "Data Reloading center.
https://imrpowder.com/#
That way you can find the given velocity of many bullet weights with each powder give or take the +/-
They use this BC chart to see the flight path of a given bullet over what distance at a given ft-per seconds.
http://www.jbmballistics.com/cgi-bin/jbmtraj-5.1.cgi
You will have to change the priamitors for your self.
The one that will pop up is a test load for my rifle coming up for next harvest season.
Once you catch on to adjusting them, your off to the races.
I'm """guessing""" there is 10.000 bullets of every make and model, then change the ft-per seconds along with other categories to calculate the trajectory.
It's just that simple
Don