Thread: Changing ballistic info to match "real" drop.

Brian Litz has an excellent chapter on this topic in one of his books - well worth reading.

He basically says change the variable that you have the least faith in.

There is a fair amount of documented research for most of the modern projectiles, and you should be able to get a validated BC (G7) for them.
DO NOT trust what the manufacturer tells you their BC value is, it is marketing. Let me know which projectile you are using and I can look it up in Litz's book.

Chronographs, unless you are using a LabRadar, are not exactly precise instruments, so muzzle velocity would more than likely be the variable I change first.

The other thing to confirm is that your turrets are calibrated correctly. Shoot a "tall target" and get a good 100yd zero, then dial up 10 or 20 minutes, and measure the shot fall.