I have a Hawke with a ".223/.308" reticle, but their app makes it easily usable with other stuff. Once you know the velocity and BC of a load and the spacing of the reticle marks, you can DIY it. The app just simplifies it. Still need to verify it by actually shooting if you want to be certain. In my case, since almost all shots are close, I'm starting to zero these scopes at 100 and keeping the marks in reserve. I'm much more likely to need to thread the needle in the puckerbrush than reach out long.
