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28 Jun 18
12:14
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21 May 10
A question on James O'Brien's mystery hour.
Surely, just by viewing the target, you are by default, doing just that.
OR, do they have to adjust for the distance between the barrel and the lens and therefore have to make a further adjustment for the curvature of the earth?
Surely, just by viewing the target, you are by default, doing just that.
OR, do they have to adjust for the distance between the barrel and the lens and therefore have to make a further adjustment for the curvature of the earth?
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Surely, just by viewing the target, you are by default, doing just that.
Smeone has just confirmed my theory b saying that you can see the target so you're just shooting in a straight line. This doesn't answer my question about adjusting for the height of the sighting lens. |
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NO you do not allow for the curvature of the earth.Any good sniper will realise that a bullet is a ballistic projectile so it will loose velocity and height as it travels along.Suppose the majority of your targets are say 400m from your hide you set your sights so that the sight is in line will the bullets flight at 400m.Adjust accordingly for closer/more distant targets.Happy hunting.
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Someone rang in and said that they have to account for the rotation of the earth.
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Wannabes, not real snipers.
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The wind could make a difference with a distant target especially if you accidentally f@rt when pulling the trigger.
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The round takes 4 secs to travel the first 1500mtrs but takes a further 7 secs to travel the second 1500mtrs, hence as nick said you allow for the earth's rotation.
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I doubt they would guess something so complicated. That would make every attempt a long shot.
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Its all built into the gun guys.
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That makes sense. You wouldn't want it to be some kind of coin toss. Heads you win...
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In 11 seconds the bullet would fall nearly 600 metres under gravity,(I think that's right
 ) neglecting air resistance. Makes shooting something two miles away rather difficult without some preparation. |
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I thought you adjusted the sight according to the fall of shot .
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I think Nick has naval gunnery in mind or the R.A. (long range snipers). They do take into account the curvature and gravity .
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Snipers have a spotter ,he has a range finder and maybe some other hitech gadgets that do the math for earths revolution ,,gravity ,wind ,trajectory etc .The hard bit will be setting the gun up from scratch with correct ammo for conditions and setting up sights .distance shots would prob be best from an elevated position with sun behind you and little cross wind .The good sharp shooters in the Wild West that used open sights or from the hip were mostly just very well practiced imo ,they knew there gun and ammo ,just an extension of the hand . Snipers trying to hit a target at extreme range are just having a bit fun ,far more efficient ways to destroy the enemy .Although it must be an effective way of putting fear into them and keeping their activity and movement down in daytime .
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First part of what breadnbutter says is correct. I've never heard of curve of the earth as that makes bollocks all sense to me but obviously wind, elevation, even temperature I believe are factored in, and yes this being 2018 they have an app for that.
They are now looking at integrating it: https://www.popularmechanics.com/military/weapons/a25104/army-computer-fire-control-system-snipers/ But this isn't new, even in ww2 they were starting to add analog targeting computers to help gunners (and fighter pilots for that matter, their sights could be pretty fancy) to hit targets, as if anything firing a gun when you are moving 300 mph at something 400 yards away moving 400mph in a different direction so that it it arrives where it WILL be isn't easy. And I know easy, I've met your sister   |
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Youtube says earth is flat so its irellevant.
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It has to be flat to maximise the chemtrail coverage and G5 line of sight mind control.
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Quite right and it also helps god to keep a check on what you are all up to. Imagine if it was round, he wouldn't know what was happening on the dark side.
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