dmurphy - would this apply here? If I lower the POI 1.5" @ 100 ydsfor the 300 grain XTP with 90 RS, what will be the impact on the 200 grain XTP @ 200 with 100 RS, given that the POI with this (200/100) combo is currently 8-9" high @ 200?? (I'm having to hold on the bottom of the target at 200).Too many moving parts for me and I can't access the ballistic tables from here to even play with it. Obviously it will help @200 but I have no idea how much. I'm guessing somewhere between 3" and 8-9" for the lighter bullet at higher charge.