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Flat Earth: How Snipers adjust for the Coriolis Effect

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Imagining how likely it is that snipers take the supposed sideways deflection of a bullet due to the Coriolis Effect, the optical illusion there an object that travels in a straight line across a spinning body is seen to follow a curved path by observers on the spinning body.

35 Comments on Flat Earth: How Snipers adjust for the Coriolis Effect

  1. Rock Dodger // 27th Aug 2015 at 11:57 am // Reply

    The only adjustment is wind and height to target.. lol.. funny video

  2. manifold d // 16th Oct 2015 at 9:53 am // Reply

    This video is very true. I shoot long range with 0.50 BMG at 1 mile and we
    don’t actually take coriolis into effect. When i first started shooting
    long range I tried to work out the math using the rotation of the earth
    given at 1000 mile/hr. If you take that into account and you shoot from
    north/south direction, then that means the target AFTER the bullet leaves
    the muzzle, will have shifted almost 444 meters. 1 mile is 1.6km, which is
    1600m, at 1000 miles/hr that is 1600000 m/hr. Divide by hours and then
    seconds and you will see how many meters the target would have shifted
    AFTER 1 second. A 50 bmg round takes about 3.2 seconds to hit a target at 1
    mile. That means, by the time the bullet arrives, the target should have
    shifted 1422 meters! You know how much we really “adjust” for coriolis?
    0.25 MOA at 1 mile. that is NOTHING. I always thought this was VERY strange
    as the math does not match reality.

    Also, Not to mention, if you shoot a target at the equator moving at 1000
    miles/hr and then you move to a northern hemisphere the rotation speed
    changes, since the circumference at that latitude is totally different than
    the circumference at the equator. We don’t take that into account. You
    shoot in Canada and you fly to Philippines, you DO NOT adjust for rotation
    of the earth. That is inconsistent to reality. IF you really lived on a
    globe, you will NEED to adjust for that. A sniper would NEVER be able to
    kill anybody with a bullet at 1000 meters, let a lone one at 2400+ meters
    in Afghanistan.

    THE EARTH IS FLAT. Any long range shooter will know what i am saying is
    true.

    • manifold d // 19th Oct 2015 at 4:18 am // Reply

      +Gorteenminogue Hi there, thanks for your take on it. I have thought about
      this but something doesn’t make sense. When the bullet leaves the muzzle,
      it is subjected to many different factors like air density, gravity and
      wind direction. There is a value called Ballistic co-efficient that
      determines the bullets ability to “fight” against cross winds. Now, here is
      the problem. you claim that the bullet and shooter are both rotating at the
      same speed, so therefore, after it leaves the muzzle, the bullet retains
      it’s horizontal velocity all the way to impact point. The problem with that
      is air friction. As soon as the bullet leaves the muzzle, it becomes an
      independent object that is no longer connected to the earth, it may carry
      the rotational energy but it will immediately start losing energy. This is
      exactly what happens when gravity acts upon the bullet after leaving the
      muzzle, it forces the bullet to drop because it begins to lose energy
      immediately after exiting the muzzle. The same phenomena should occur with
      horizontal rotational force.

      And since the earth rotates at the same speed at the equator (anywhere else
      other than the equator we will have to calculate the circumference of that
      longitude and find out the rotational speed at that longitude) we can then
      say that is a constant. Just like gravity has a acceleration constant of
      9.8 meters/second squared.

      In order for the facts to fit reality, the bullet that is subjected to the
      1000 mile/hr claim, it must retain that energy consistently all the way to
      impact. Which is impossible.

      If rotation of the earth exists, then we will have to aim the rifle muzzle
      a calculated number of meters or even inches to the left or right of the
      target (depending on whether you are shooting north to south or vice versa)
      and hope to horizontally “drop” the bullet on to the target just like how
      we aim the rifle up or down in order to “drop” the bullet on the target due
      to affects of gravity.

      We see this time and time again with gravity but all of the sudden we have
      to dispense with this fact when it comes to rotation.

      Another way to view this is to imagine a plane on a runway facing west to
      east. The plane takes off with the rotational velocity plus it’s engine
      output velocity. As soon as the plane stops touching the earth, it will
      immediately begin to lose that rotational energy due to air, friction etc.
      it will continue to lose energy until the plane is flying at it’s own
      engine power output and eventually no longer possess the rotational energy.
      If this is the case, the destination below, which is still rotating at a
      constant 1000 miles/hr will easily overtake or lag behind the plane making
      it almost impossible for the plane to arrive.

      Not arguing with anybody about this but if we are to be honest and
      consistent then we need to start being honest with our observations and be
      consistent with our physics.

    • Gorteenminogue // 20th Oct 2015 at 11:47 pm // Reply

      +manifold d Why would a plane lose its rotational energy to the air? It is
      not the case that the air is stationary and the Earth rotates beneath it.
      If that were so, the ‘air’ speed on the equator would be over 1,000 mph.

    • tekcomputers // 21st Oct 2015 at 11:32 pm // Reply

      +Gorteenminogue Because this uneducated fry-cook posing on youtube comments
      as someone who has shot anything long distance does not know about
      conservation of momentum.

    • +manifold d All kinds of problems here… There is no crosswind. Your
      bullet is not moving 1,000 miles an hour sideways through the air, so there
      isn’t 1,000 mph worth of drag acting on your bullet. Surely by looking at a
      globe you can see that you really are moving east really, really fast. And
      yet, your hat isn’t flying off in that 1,000 mph crosswind.

      You guys are all imagining that Coriolis is an aerodynamic crosswind on the
      bullet, and it’s not. It is not the same as throwing a baseball out a car
      window, where the ball is suddenly exposed to a wind shear of 60 mph, which
      does indeed place a huge drag on the ball.

      Imagine this. We are both flying in an airplane that is, amazingly, 100
      feet wide. You are sitting in the far left seat, facing me. I am on the far
      right, facing you. The air outside the plane may be whizzing by, but inside
      the plane, the air, and you, and me, are all traveling exactly the same
      speed, at 500 mph. I throw you a baseball. It goes straight from me to you,
      even if the plane is going fast. There’s no crosswind on the ball. It just
      travels in a gravity-induced arc, and it’s forward speed is slowed slightly
      by the drag on the ball, but it comes right to you.

      Now, the next ball I throw… After I throw it, while it is in flight to
      you, the pilot suddenly slows down to 490 mph, so quickly that it all
      happens while the ball is still in flight to you. The ball is still moving
      to your left (my right) at 500 mph, but there is not a 500 mph crosswind
      acting on it. But you are now only moving to your left at 490 mph, so if
      the flight time of the ball to you is 1 second, the ball will land 14.7
      feet to your left. 500-490 = 10 mph, which is 14.7 feet per second.
      Visually the ball will look to you like it is curving sharply to your left,
      but it’s actually flying in a perfectly straight (horizontally) in the
      exact same parabolic trajectory as when I threw it, you just ended up being
      a slightly different place than I expected you to be at the time I threw it.

      Coriolis simply says that if I am at 45 degree latitude, and I fire at a
      target 1,200 yards north of me, that target will actually be moving about
      2.5 inches per second slower to my right than they visually appeared to be
      when I fired. There’s no crosswind. Coriolis isn’t bending the bullet path
      left or right.

    • +manifold d “You know how much we really “adjust” for coriolis? 0.25 MOA at
      1 mile. that is NOTHING” That’s only about 4.5 inches. Not sure what
      latitude you’re at. When I shoot the BMG at past 1,000 I am always shooting
      the AMAX, so my flight time is about 2.9 seconds. At my home latitude,
      Coriolis at a mile for your bullet would be about .6 MOA.

  3. Murray Ferguson // 11th Dec 2015 at 5:30 am // Reply

    good stuff Dave love it.. by the by were you aware there is a shooting
    range on the map right under where you did your dodgy calcs..its MoD next
    to Boghall farm. there’s syncretism in everything

    • +Murray Ferguson Hah, really? I just opened the map at random… The
      universe has another giggle 😀

  4. phoenix21studios // 28th Dec 2015 at 1:02 am // Reply

    “There is no Coriolis Effect” is such a weak rebuttal to something you have
    no real answer for. You can easily demonstrate it, I can, anyone can. Try
    it at home, in a field.

    • remmington308 // 31st May 2016 at 12:04 am // Reply

      +Guidetotruth he literally says the effect is a thing but that he doesn’t
      take it into account because it doesn’t make enough of a difference. maybe
      I should break this down for you. targets shot at 1000+ yards are usually
      large. often as much arts 2ftx2ft. if you shoot at at target 24 inches
      across both ways why would you worry about a 2-4 inch movement when you
      have 576 square inches of target to hit? he said he doesn’t compute for it,
      but admits that it exists. if you’re going to use a source to prove your
      point that coriolis effect doesn’t exist, make sure he doesn’t blatantly
      say that It does.

    • remmington308 // 31st May 2016 at 12:06 am // Reply

      +Guidetotruth also, when you claim people use technical terms to sound cool
      to simple people, you’re that simple person.

    • remmington308 // 31st May 2016 at 7:52 am // Reply

      +Guidetotruth also since you made the claim, YOU tell me about these
      nuances. Tell me why you, a small, rather feeble minded dumbass behind a
      keyboard, know more than thousands of scientists and astronomers who study
      this crap with calculations longer than your educational resume.

    • Spheroidial Master // 8th Jul 2016 at 4:25 am // Reply

      +DMurphy25 No, that’s stupid. Effect is minute. But discovered when
      artillery was invented. Do your research.

  5. Erin Byrne // 4th Feb 2016 at 6:27 pm // Reply

    “…and that damn ugly dude u married” BWAAHAHAHAHAA!

    Love your work, Dave. Keep it up!

  6. Shell Glow // 2nd Mar 2016 at 5:12 am // Reply

    Love it great video ☺️

  7. Dorje Daka // 5th May 2016 at 12:11 am // Reply

    Funniest Flat Earth vid yet I reckon, couldn’t stop laughing :)

  8. Dorje Daka // 5th May 2016 at 12:13 am // Reply

    Thanks for introducing me to Flat Earth Dave some time ago,,, now I too
    produce flat earth vids :)

  9. Larry Castile // 5th May 2016 at 5:30 am // Reply

    this guy is only sniping a few thousand feet

  10. Gilbert Bérubé // 9th May 2016 at 12:22 am // Reply

    The music on the calculation scene is perfect… Very funny..

  11. jenna nelson // 31st May 2016 at 6:29 pm // Reply

    OK. Try shooting 2km or lobbing a shell over 20km and don’t adjust for the
    earth being round nor moving and see if u hit what you’re “aiming” at….
    fool.

  12. jenna nelson // 31st May 2016 at 6:29 pm // Reply

    OK. Try shooting 2km or lobbing a shell over 20km and don’t adjust for the
    earth being round nor moving and see if u hit what you’re “aiming” at….
    fool.

  13. ‫المقداد‬‎ // 4th Jun 2016 at 9:28 am // Reply

    hhhhhhhhhhhhhhh nice

  14. True Harmony // 7th Jun 2016 at 9:31 am // Reply

    LOL! Good one Dave! :)

  15. Jacopo Tersigni // 26th Jun 2016 at 2:30 am // Reply

    There is no coriolis effect? Really? So why snipers, plane pilots, ship
    captains have to adjust? Why do objects fall further east? I just wonder
    how can flat earthers exist.

  16. Daniel Bundy // 3rd Jul 2016 at 10:24 am // Reply

    some people are a little smarter than this guy in the video….. funny
    though XD

  17. Great , really funny , thanks !!!

  18. Spheroidial Master // 8th Jul 2016 at 4:22 am // Reply

    That’s not even the correct definition of the Coriolis effect.

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