The Coriolis Effect
A rotating Round Earth model predicts that bodies which move through the air will be appear to be deflected Eastwards or Westwards in their path of movement due to the rotation of the earth. This effect has been termed the "Coriolis Effect."
Coriolis Effect, however, is a fictitious effect that is not, and has never been, demonstrated with experimental evidence. Its proponents are unable to show that this effect has ever been detected or that it is truly necessary to account for it for various operations. The evidence for this effect appears to be completely based entirely on 'common knowledge', on how things 'should be', and by authors who make 'predictions'; but all articles and documents presented are without reference to, or demonstration of, the critical and necessary experimental evidence which directly prove the matter.
Artillery
It has been alleged that the Coriolis Effect plays a part in the ballistic trajectory of artillery, and that artillerymen must account for it for accuracy. We are presented with military instructions and range tables for accounting for the Coriolis Effect, and so, the Coriolis Effect therefore must be a real effect.
Long Range Shooting
It has been alleged that the Coriolis Effect plays a large part in accurate sharp shooting over long distances. However, we find several online references where claimed sniper veterans have stated that they have never taken the Coriolis Effect into account when shooting. We are pointed to the U.S. Marine Corps Sniping Manual, which does not mention the Coriolis Effect anywhere in the text at all.
U.S. Marine Corps Sniping Manual
Full Text Link
The sniper must know the general principles of: perspective, vanishing point, perspective drawing, delineation, and geographical areas of intelligence operations. However, the words "Coriolis" or "Coriolis Effect," do not appear anywhere in the U.S. Marine Corps Sniping Manual.
Misleading References
The internet is rife with references that the Coriolis Effect is actively used, but this is an assumption without demonstration.
The World’s Longest Sniper Kill: The Enemy Shot Dead at 3,871 Yards (Over 2 Miles Away)
“ To understand the complexity of the shot, it’s best to start with a sniper maxim: sniping is weaponized math. Although a .50 caliber sniper rifle bullet can fly as far as five miles, a host of factors including gravity, wind speed and direction, altitude, barometric pressure, humidity and even the Coriolis Effect act upon the bullet as it travels. Even worse, these effects increase the farther the bullet travels. A successful sniper team operating at extreme distances must do its best to predict exactly how these factors will affect the bullet and calculate how to get the bullet back onto target. ”
This quote actually says "these are the factors that will affect the bullet," rather than "these are the factors that the sniper accounted for." One is a commentary by the author and the other is a depiction of process. Reader should be able to see that there is a difference.
Water Currents
The rotation of small scale liquids in opposing hemispheres was debunked by Snopes.