bullet drop????

[mr crab]

Went to the range last night. Sighted in a .243 with 80gr. custom made barnes tipped tsx's, and a .270 with 150gr. win. power points. I sighted in both rifles 3 inches high at 100yds. My question is.....where will the bullets hit at 200yds. None of the ballistic calculators I've found allow for a high zero point at 100 yds. I have played with them by changing the zero point and have come up with only more questions because changing the zero point changes the initial angle of the bullet. I do not have access to a 200 yd rifle range which would be the obvious answer here. Just hoping somebody here has experience with these type of ballistic questions. My ultimate goal is for the bullets to be dead on at 200 yds, and I think It will be pretty close, just wondering from more of an educational stance. TIA