Sounds like you you need a ballistic program and a cronograph. I'd recommend the Ohler cronograph and here is a web site that will help you with some online ballistics,
http://www.eskimo.com/~jbm/ballistics/traj/traj.html
I have no experiance with 220 grainers as I prefer the 240 grain Sierra HPBT. For every day shooting and hunting I set my zero at 82 yards, which makes me 2" high at 50 yards and 2" low at 100 yards. I use 9.2 grains of H110 with a CCI SR primer.
I have also been working on a 125 grain load, 2400FPS velocities are easly achievable but I haven't found a consistant load yet.
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