Unfortunately, the sightron new site has taken all the info you want and dumped it.
Try and get a catalog from Hirsch Precision. It will show the subtension values of each scope at min and max. You can then extrapolate what it will be in the middle.
If you can indicate which scope/mag range you are after, I can help. In the lower mag variables, they will index properly at or near full mag. On the high mag scopes AND certain reticles, in the middle range.
So again, more info.
Jerry