If you have access to a LabRadar you can determinr the ballistic coefficient of any bullet. The LabRadar will show the velocity of any bullet from muzzle to over 100 yards, possibly much farther given the reflective nature of the base of most BPCR bullets. The range I have access to now is only 100 yards. I used the Hornady online ballistic program to plug in different B.C. values until the velocities matched, then you can prroject trajectories and velocities to any distance desired.
J.Murphy