Originally Posted by CameronWilson
.177 rifles have a flatter trajectory, because their pellets travel faster, and therefore gravity has less time to act upon them.
If you could find a .22 pellet that had the same weight as a .177 pellet, both would have exactly the same trajectory and therefore the same aim points.
No, the .22 is still larger (frontal area) so would have more drag and hence would drop more. In a vacuum you'd be correct, but not in air.