ACOG sight vs. red dot sight

Replies to This Discussion

Permalink Reply by Michael T. Douglas on July 14, 2011 at 2:13pm

For those who prefer red dot sights, consider the issue of parallax.

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Permalink Reply by PRIME_Ω_PREDATOR on July 14, 2011 at 2:43pm

I use my EOTECH xps2 or Irons.

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Permalink Reply by Michael T. Douglas on July 14, 2011 at 3:44pm

What about parallax?

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Permalink Reply by PRIME_Ω_PREDATOR on July 14, 2011 at 8:27pm

Not familiar with Parallax.

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Permalink Reply by Michael T. Douglas on July 14, 2011 at 9:12pm

People think that no matter where the dot is on any type of dot sight that you will hit the target every time. Parallax is when you move the dot to the edge of the sight and place the dot on the target and complete miss. I believe people think the sight is like a sniper scope which is parallax-free, but it isn't. Dot sights are like looking down a short tube. Every angle at which you try to look through the tube, you get a different picture. A sniper scope is like looking at a television screen, no matter what angle you look at it from, you see the same picture. I believe this is because light passes through internal concave lenses and hits the back lens like a projection screen. Dot sights don't have this, although, the lens on them are slightly concaved to help correct for parallax, but no completely.

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Permalink Reply by PRIME_Ω_PREDATOR on July 14, 2011 at 9:29pm

Okay, heard of it but not by that name. Just by the explanation. Haven't experienced or tested it.

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Permalink Reply by Michael T. Douglas on July 14, 2011 at 9:46pm

May not have much trouble with any dot sights if you can place the dot at the center of the sight easily. Although, there is still the possibility of sights being off target.

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Permalink Reply by PRIME_Ω_PREDATOR on July 15, 2011 at 5:16am

I rely on irons. The holo is a luxury. I rarely turn it on. It may end up on my AR pistol. I'm making head shots with Irons at over 100 yards, even with my old eyes.

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Permalink Reply by Michael T. Douglas on July 15, 2011 at 9:19am

Me, I would never use sights that have parallax. Then again, you don't even need sights if your instincts are good enough.

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Permalink Reply by PRIME_Ω_PREDATOR on July 30, 2011 at 10:32pm

No Parallax with my EOTECH. Unless I was holding it wrong.

Permalink Reply by Michael T. Douglas on July 31, 2011 at 9:32am

Did you move the dot to the edge of the sight?

Permalink Reply by PRIME_Ω_PREDATOR on July 31, 2011 at 11:00am

I angled the sight around and it doesn't appear to move to the side. I'm gonna get it right now and check again.

 

Okay. I move the dot to the edge but the front site base and barrel are

still lined up. I no Parallax. The bullet hits where the dot points cuz the barrel moves with the dot. Unless I'm not understanding Parallax.

 

The EOTECH is my first optic other than a BSA scope on my .22lr bolt action. New to me but nice.

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