Reply To: calculating short range MOA ?
Probably ought to check out your scope elevation capabilities as well. When shooting really short, you can max out the adjustments very quickly and may need to shim the scope. If you max out, the erector tube assembly could do a bit of free floating as the springs won’t hold it in place inside the scope (bottoming out removes all tension from one of the springs). and the scope may shift POI between shots. If your scope seems to be wandering, consider a shim and see if that helps.
Just a thought.