Ballistics charts are useless unless you have a chronograph to measure the true velocity. Ballistics printed on ammo boxes tend to be optimistic and/or only good for the test gun that was used to get those numbers.

With a typical load zeroed at 100 yards, here's a pretty rough estimate of your trajectory assuming that you are shooting at ~2800 fps give or take.

50 yards -1"
100 yards 0
200 yards -4"
300 yards -14"

The highpower rule of thumb is: zeroed at 100...
up 2 minutes to 200
up 3minutes from 200 to 300

Remember this for most non magnum cartridges and you'll be pretty close.