Ballistics is a subject I have some knowledge of. However lets keep it simple.
All objects fall at a rate of 32.17 feet per second every second.
After half a second the bullet will be about 400 yards in front of you and have dropped 16 feet. What you do with a rifle is set open sights for 200yds at which range it shoots a maximum of about 2 inches above the sight line. It shoots at perhaps 4 inches low at 250yds and as range increases the trajectory becomes more rainbow like. It would make sense to set the guns at 200yds on the range. At 200yds from 6 o'clock an Albatros does not present a large target.
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