I just downloaded Strelock ballistic calculator, and it looks like the pay for version (strelock +) will calculate at any magnification. It lists the TDS reticle, and it's pretty slick. BTW, I have the same scope.
Be aware that speed is in m/s and bullet weight is in grams, so you have turn off metric units. A picture of the reticle pops up with the ranges for each horizontal line.
I think I may spring for the paid version.
Last edited by Sakoluvr; 10/16/12.