Thanks guys! My scope is an older Leupold 4.5-14X40 Long-Range/Tactical model. It has a USMC Mil-dot reticle. My spotter was giving me a wind call in mils and I was using the reticle to "hold off." Interestingly, for those 1200 yard shots, I ran out of elevation in my scope. So for those shots, I was using the reticle to hold just over three mils high, and 1.5 mils right. The target was in a "free hold", meaning it was nowhere near the intersection of the crosshairs. Rather, it was all by itself in the lower left quadrant of the scope's field of view.
Howard