@cro789 your settings are fine, and the app is working as expected.
What you're seeing is an artifact of the underlying ballistics engine, where the trajectory periodically needs to be "adjusted" to account for the changing velocity throughout the bullet's flight. The theory is pretty heavy, but basically: your Ballistic Coefficient is dependent on velocity (most published values assume a specific set of conditions), and as the bullet slows the drag needs to be re-computed to account for the new velocity. In a perfect world this would happen at each time step (i.e. each yard), but this would be pretty compute-intensive, so instead the adjustments happen at predetermined intervals.
To help visualize this better, here's a graph of your specific bullet's trajectory, zoomed in to the interesting portion:
View attachment 6938134
Here you can see 3 instances where the adjustment occurs, and the first "spike" explains the result you're seeing. This might seem undesirable, but keep this in mind: these spikes are relatively small (I adjusted to graph to exaggerate the detail), and the effects actually become
less pronounced at longer ranges. At the distances most shooters are using TRASOL, the effects are completely negligible. The benefits to these adjustments, however, are significant.
Hope this helps.
. Its more pronounced at short range, after 400 I don't think it happens, or at least not to the same degree.
