Author Topic: Because You Forgot Your Trigonometry.....How Shooting At Angles Work  (Read 1395 times)

twyacht

  • "Cogito, ergo armatum sum."
  • Top Forum Member
  • *****
  • Posts: 10443
  • DRTV Ranger
Watch, learn, know.....Shooting uphill, shooting downhill makes no difference....

Great tutorial.

<a href="http://www.youtube.com/watch?v=wTSBcNgGMNo" target="_blank">http://www.youtube.com/watch?v=wTSBcNgGMNo</a>

Especially, if we end up "voting from the rooftops"....



Thomas Jefferson: The strongest reason for the people to keep and bear arms is, as a last resort, to protect themselves against the tyranny of government. That is why our masters in Washington are so anxious to disarm us. They are not afraid of criminals. They are afraid of a populace which cannot be subdued by tyrants."
Col. Jeff Cooper.

The Down Range TV Forum


tombogan03884

  • Freedom isn't Free
  • Top Forum Member
  • *****
  • Posts: 30134
  • DRTV Ranger
Re: Because You Forgot Your Trigonometry.....How Shooting At Angles Work
« Reply #1 on: December 16, 2011, 08:25:41 pm »
Cool, Handy info.
America
1775 - 2012
It was fun while it lasted  :(

JC5123

  • Top Forum Member
  • *****
  • Posts: 2423
  • Fortune sides with him who dares.
Re: Because You Forgot Your Trigonometry.....How Shooting At Angles Work
« Reply #2 on: December 19, 2011, 05:26:32 pm »


These are great little tools if you find yourself shooting at angles most of the time.
Take the known range and multiply by the number (Put a decimal in front of it) and that is your true range. It saves a lot of math.

For example if your target is at 450yds and your ACI is pointing at the 87 on the dial you multiply 450yds X .87(COS) = 391.5yds

So you would adjust your sights for 390 yds. And it works the same whether you are shooting up hill or down.
I am a member of my nation's chosen soldiery.
God grant that I may not be found wanting,
that I will not fail this sacred trust.

twyacht

  • "Cogito, ergo armatum sum."
  • Top Forum Member
  • *****
  • Posts: 10443
  • DRTV Ranger
Re: Because You Forgot Your Trigonometry.....How Shooting At Angles Work
« Reply #3 on: December 19, 2011, 05:50:55 pm »
even though I am a "flat-lander" just where can one acquire one or two of these JC?

Thomas Jefferson: The strongest reason for the people to keep and bear arms is, as a last resort, to protect themselves against the tyranny of government. That is why our masters in Washington are so anxious to disarm us. They are not afraid of criminals. They are afraid of a populace which cannot be subdued by tyrants."
Col. Jeff Cooper.

kmitch200

  • Top Forum Member
  • *****
  • Posts: 2020
Re: Because You Forgot Your Trigonometry.....How Shooting At Angles Work
« Reply #4 on: December 19, 2011, 10:55:34 pm »
The ones I've seen are over a $100 - like the one in the picture. (check Brownell's) Then you have to get a mount - another $60 or so. I can make a BUNCH of range cards and tape them on the stock for that amount of coin.

A laser rangefinder with an angle feature can be costly but will do the work for you. Plus you can use it for golf.  ;)
It's an eighty-eight Magnum.  It shoots through schools.

"GunControl is the belief that declawing the cat will protect it against other animals."  Robb Allen

Solus

  • Top Forum Member
  • *****
  • Posts: 7076
  • DRTV Ranger
Re: Because You Forgot Your Trigonometry.....How Shooting At Angles Work
« Reply #5 on: December 20, 2011, 08:46:26 am »
I assume this device is an ACI...what ever that might be??  

Angle  Cosign  Indicator????


My google-fu isn't working for ACI and Brownells doesn't do any better.


Is the name of the device or a link to it forbidden knowledge?


Found it...  Angle Cosign Indicator was a correct guess.

you can see one here    http://ustacticalsupply.com/anglecosineindicator-2.aspx

Here is a link to a range finder with slope correction.     Goolged     laser range finder slope

for those with a better bank balance than math skills.

http://www.newegg.com/Product/Product.aspx?Item=9SIA04K03B3397&nm_mc=OTC-Froogle3&cm_mmc=OTC-Froogle3-_-Binoculars/Telescopes-_-BushNell-_-9SIA04K03B3397

"Molon Labe" - King Leonidas and a few Spartans

The Smallest Minority on earth is the individual. Those who deny individual rights cannot claim to be defenders of minorities. - Ayn Rand

 Is life so dear, or peace so sweet, as to be purchased at the price of chains and slavery? Forbid it, Almighty God! I know not what course others may take; but as for me, give me liberty or give me death!"
—Patrick Henry

"Good intentions will always be pleaded for every assumption of authority. It is hardly too strong to say that the Constitution was made to guard the people against the dangers of good intentions. There are men in all ages who mean to govern well, but they mean to govern. They promise to be good masters, but they mean to be masters."
— Daniel Webster

kmitch200

  • Top Forum Member
  • *****
  • Posts: 2020
It's an eighty-eight Magnum.  It shoots through schools.

"GunControl is the belief that declawing the cat will protect it against other animals."  Robb Allen

fightingquaker13

  • Top Forum Member
  • *****
  • Posts: 12015
Re: Because You Forgot Your Trigonometry.....How Shooting At Angles Work
« Reply #7 on: December 22, 2011, 11:47:28 pm »
Why do I suddenly get a flashback  to the guys from "Revenge of the Nerds" kicking Vassily's ass in "Enemy at the Gates II". ;D
FQ13