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snayperskaya wrote:

But Cpt MacMillan told me to remember the coriolis effect from my training!

Gazza wrote:The coriolis effect is a right kick in the bollox for the flat earthers too come to think of it

This has got very brain taxing now and I've come to the conclusion that with a professional marksman there must be a lot of "guesswork" for the super long shots or they have a formula and cheat sheets worked out for all situations.

Maybe if you are trying to get tiny little groups at ridiculously long range it might be a consideration but if a sniper or DM wanted to hit centre mass out to 800 to a 1000m I don't think they'd worry about it.

"At 1,000 yards the Coriolis deflection is small but not necessarily trivial. Una computed that at the latitude of Sacramento, a bullet traveling 1,000 yards would be deflected about three inches to the right."

Do Snipers Compensate for the Earth's Rotation?

In terms of the longest confirmed sniper kill in the world, he "walked it in" and zeroed nearby, but out of earshot of the insurgents, then he took his shots knowing his dope was correct. A fair amount of working out to get it close was probably used, but in the end, actual evidence proved empirical.

The majority of us shoot at known distances and from known points on known shooting ranges so the once the fall of shot has been walked in you know what to expect the next time out.

Things change if you shoot on new and relatively unknown terrain and I have been surprised at just how hard it is to hit a small target at 500-600 yards at a location cross terrain such as down a valley or across hills with variable winds and without the benefit of wind flags. Late Autumn is a great time to shoot as you have the leaves starting to fall and the grass on the edges which make good wind flags.

I would have thought in the video above the biggest difference would have come from shooting into the sun and shooting with the sun behind him. Mirage is different in each case, and also wind would be 180% different.