have used chairgun with some success and Strelok which for me gave better result`s.
However i have found with the pro target i now have even with very accurate detailed input neither will give me an accurate output.
they are reasonably close through the mid range (closer to zero) but at the near and far extreme`s they are way off! trial and error is the only true way to get that range card.
it`s a work in progress.