Ysterhout Dot Net
With a drop chart that corresponds to actual drop on at least two widely seperated distances, you have completed the fundamentals to setting up your firing solution for Long Range.
Now you are ready to move off the drop-chart, and on to using a ballistic calculator like Strelok, as you have all the correct, verified input parameters.
When the bullet trajectory can be reliably predicted, you can focus your time and effort on practicing shooting technique.
Having a reliable firing solution will make your practice sessions more enjoyable, and help build your confidence and shooting skills more rapidly, as the only variable that remains to be improved upon in the shooting equation is yourself, the shooter.
If you are in the situation where your tweaked numbers still fail to predict actual when you change the distance, there are some pointers for you on the following Debugging page.