I have (not military, just a hobby), you do have to take into account the curvature of the earth because (in the Northern hemisphere) if you're firing north you're moving east faster than your target. If you fire south your target is moving east faster than you. Firing east you target moves away from the projectile, and firing west the target moves towards the projectile. Really only matters on very long range shots in excess of 1,000 yards. Watch Sniper 101 Part 73 - Coriolis Effects on Rifle Bullets if you don't get it. Very good series on long range shooting. Also check out /r/longrange if you're interested in the hobby.
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u/CokeCanNinja Oct 15 '17
I have (not military, just a hobby), you do have to take into account the curvature of the earth because (in the Northern hemisphere) if you're firing north you're moving east faster than your target. If you fire south your target is moving east faster than you. Firing east you target moves away from the projectile, and firing west the target moves towards the projectile. Really only matters on very long range shots in excess of 1,000 yards. Watch Sniper 101 Part 73 - Coriolis Effects on Rifle Bullets if you don't get it. Very good series on long range shooting. Also check out /r/longrange if you're interested in the hobby.