I don't know of any programs that have an input for the taper of your mounts either. From personal experience on my .30-06, they don't change. If you have enough down adjustment for your scope to be zeroed at 100 yards with the added MOA of the mount, all the taper does is allow you to adjust your point of impact to longer ranges. I am still using the same ballistics card out to 700 that I used before I changed to the tapered base and had to add out to 1000 yards for the new base, because the scope can now adjust to that range.
Sorry if the post doesn't make much sense. Just trying to help a little bit.