I'm struggling to find much info on Leica's "IBS" or "Ballistic" reticles, so thought I'd air my question here. I'm looking for a scope to put on my 6.5CM that has well-placed holdover marks for some long range hunting (deer to 400 yds, coyotes to 700+ yds, etc...) and that has target turrets available for punching paper. The Zeiss HD5 3-15x42 w/ Z800 fits that bill pretty nicely, but I see that Leica offers something that appears to be similar in their 3.5-14x42 with the IBS and Ballistic reticles. When I go to their ballistic calculator however, no matter how much I play around with the parameters, I can't seem to come up with any combination where their holdover marks match up with any kind of nominal, easy-to-remember yardages. (With the Zeiss Ballistic calculator, I found it's quite easy to play with sight-in distance and magnification parameters to get the ballistics to match spot-on with the holdover mark.) For those of you familiar with Leica's IBS and Ballistic reticles, is it their intent to be able to make it work similar to Zeiss' system, or are the holdover marks placed on MOA or MIL spacing, or something else altogether???