Oh, sorry, I mixed up two different shooting schools. I was thinking of Darrell Hollands in OR; you are talking about Mark Thompson's school in UT.
I have a buddy that had his 30-378 and that scope, but I think he already sold it. I'll check with him and let you know if he has it and wants to sell it. It's not really mils, it's BDC calibrated for his loads in the specific rifle.
Mark's system is a good one for a packaged shooting system. If you want more flexibility going forward, you might want to learn mils or MOA which you can then apply to any rifle once you know the load.