I have been using the Nikon Spot-On program for several years now. I even have it on my Smart Phone. (A hillbilly with an iPhone! Can you imagine that?) The program works exceptionally well with Nikon riflescopes with or without the BDC reticle. You can learn more about it HERE.
For 2012 Nikon has taken the next logical step by offering custom elevation turrets for Nikon scopes that are engineered by Spot-On technology. You simply go to the on-line resource and input your ballistic information and the program creates your elevation turret.
I’m excited to give the system a try, now I just have to figure out which rifle I want to have a custom elevation turret made for. I’ll let you know how it all sorts out.