Pretty cool looking distance shooting tip

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Pretty cool looking distance shooting tip

Post by Sergeant Hartman » 25 Jan 2019, 1:55 pm

Saw this, very interesting idea

20190125_145327.jpg
20190125_145327.jpg (625.52 KiB) Viewed 4308 times
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Re: Pretty cool looking distance shooting tip

Post by No1_49er » 25 Jan 2019, 2:04 pm

Yeh, "interesting".
And how is it proposed that you zero your rifle/sight combo at 1,000yds?
BTW, is there a date anywhere showing when that was posted? Wasn't April 1 was it
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Re: Pretty cool looking distance shooting tip

Post by Sergeant Hartman » 25 Jan 2019, 2:30 pm

Lol. I checked that as well... only about an hour ago
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Re: Pretty cool looking distance shooting tip

Post by TassieTiger » 25 Jan 2019, 2:53 pm

So wrong...so many levels.
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Re: Pretty cool looking distance shooting tip

Post by Rod_outbak » 25 Jan 2019, 2:56 pm

Hmm..... that magical blue line on the second pic sure isnt what I thought was the bullet was doing...
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Re: Pretty cool looking distance shooting tip

Post by Gaznazdiak » 25 Jan 2019, 2:59 pm

Changing the range at which you zero your scope is NOT going to change your projectile's trajectory as the "illustration" suggests.

Doesn't matter if you zero at 10m or 1000m., the ballistic path the bullet's flight takes is still the same and you are still going to have to adjust the relationship of your scope to your barrel for the reticle and impact points to match.

Ziad, are taking a sly tug on our, um, leg?
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Re: Pretty cool looking distance shooting tip

Post by groundhog » 25 Jan 2019, 3:01 pm

Must be for a rail gun with that trajectory.
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Re: Pretty cool looking distance shooting tip

Post by deye243 » 25 Jan 2019, 3:44 pm

So you go out on a different day with a different temp and you have diffent zero narh I will stick to a 200y zero ......
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Re: Pretty cool looking distance shooting tip

Post by Sergeant Hartman » 25 Jan 2019, 4:12 pm

Omg...I know it's hot but still....pretty obvious when you think about it. This only works for calibers in 6.6 and 6.9mm range.

Zero a gun at 100m. At 50m you likely don't need to move your scope much, maybe a tiny bit of hold over.

Zero the same gun at 200m same, if checked at 50, 75 or 100. The holdover is minimum.

So implying that, and taking into consideration the curvature of the earth, if the gun is zeroed at 1000y little or no holdover is required from 0 to 1000y. After that the bullet will fall like a fat man jumping from a 2 story apartment.

Anyway the picture to be makes it quite clear. And I am sorry i am trying to explain to ya'll what the guy on book face told me. This must be why the US Army moved to 6.5creedmoor as their main calibre
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Re: Pretty cool looking distance shooting tip

Post by Gaznazdiak » 25 Jan 2019, 5:11 pm

Ziad wrote:Omg...I know it's hot but still....pretty obvious when you think about it. This only works for calibers in 6.6 and 6.9mm range.

Zero a gun at 100m. At 50m you likely don't need to move your scope much, maybe a tiny bit of hold over.

Zero the same gun at 200m same, if checked at 50, 75 or 100. The holdover is minimum.

So implying that, and taking into consideration the curvature of the earth, if the gun is zeroed at 1000y little or no holdover is required from 0 to 1000y. After that the bullet will fall like a fat man jumping from a 2 story apartment.

Anyway the picture to be makes it quite clear. And I am sorry i am trying to explain to ya'll what the guy on book face told me. This must be why the US Army moved to 6.5creedmoor as their main calibre



But Ziad, look at the claim for the trajectory. Ballistics just don't work that way mate.
Saying that how you set your zero can effect the ballistic path of the bullet is like claiming red cars go faster.

Also note that the 6.5 CM is 6.5mm, that is outside the 6.6-6.9 range isn't it?

Mate, even the hypersonic projectiles fired by a rail gun, while looking very straight for most of it's path, it is still following a ballistic trajectory.

Optics can't change physics for any projectile no matter what the calibre, or how it is aimed.

Gravity, as the physicists say, sucks. Everything, even bullets in the abovementioned range.
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Re: Pretty cool looking distance shooting tip

Post by TassieTiger » 25 Jan 2019, 5:54 pm

Just considering the very basic variables alone, for a 1000 yard zero, mean every day your zero could move 2 metres...
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Re: Pretty cool looking distance shooting tip

Post by Gaznazdiak » 25 Jan 2019, 6:08 pm

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Re: Pretty cool looking distance shooting tip

Post by Archie » 25 Jan 2019, 6:33 pm

Me thinks Zias is taking the piss, no?

Also fat man falling from a two storey apartment drops at the same speed as a thin man, not accounting for drag. So actually fat guy is probably a bit slower...
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Re: Pretty cool looking distance shooting tip

Post by Sergeant Hartman » 25 Jan 2019, 8:35 pm

Lol @ archie.... my arguments are getting to far fetched?

Ok it obviously fake
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Re: Pretty cool looking distance shooting tip

Post by tom604 » 25 Jan 2019, 10:07 pm

i always zero my rifles at two thousand meters,,just in case that fox is sitting a bit far out,,i have had to fit an additional case to hold enough powder for that flat shooting speed but its an easy dyi with a file and a bit off gaffer tape,,oh and Archie it all depends if the fat man "swims" toward the ground, there by increasing his speed,,i will admit that unless he kicks his legs as well the increase is not much :allegedly: :D :thumbsup:
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Re: Pretty cool looking distance shooting tip

Post by bladeracer » 26 Jan 2019, 3:42 am

Ziad wrote:Saw this, very interesting idea

20190125_145327.jpg


Great, if all your shooting is further than 1000yds :-)
A three-meter hold-under on that deer at 550yds is going to be fun to judge.
The meme is clearly a piss-take :-)

You only need to zero as far out as required to still have enough in the turret to be able to dial in the longest shot you might take.
My Bushnell scopes give me 105MoA of elevation.
If I zero the 6.5x55mm at 250m right at the bottom of the turret (using a 50MoA rail) it leaves me enough elevation adjustment to dial onto a target around 1800m away. But the bullet is transitioning by about 1400m anyway.

It becomes more obvious, and relevant when you shoot the .22LR at longer ranges.
If I zero at 50m with a level rail I only have enough elevation in the turret to dial out to around 180m.
If I zero at 50m with a 50MoA rail though, I have enough to dial out to around 240m.
A 100m zero with a 50MoA rail lets me reach out to almost 500m, but requires a hold-under of around 115mm at 65m, workable on foxes, but getting difficult for head-shooting rabbits.

That's why they make 34mm tubes and offer 160MoA or more of adjustment on long-range scopes.
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