There is no better way that actual verification via shooting.
Ballistics charts are nice. So do you know the exact velocity the round is leaving your gun? That would actually involve chronoing your ammo, so why not target check your POA and POIs?
I find that once you know your drop information for 2 given distances, then the ballistics charts are the most beneficial for use at other distances once you have at least the two points of reference. However for my shooting, the 2 points of refence usually cover most of the range I need.
"If you look through your scope and see your shoe, aim higher." -- said to me by my 11 year old daughter before going out for hogs 8/13/2011
My Hunting Videos https://www.youtube.com/user/HornHillRange