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I have astigmatism. As most people know, astigmatism causes havoc when using non "multiplied" red dots. I would love to use a red dot for the eye relief and eye placement forgiveness when moving but I'm not hitting anything when it looks like a Rorschach inkblot.

I'm struggling with a decision on an AR optic between a prism scope, a low power variable scope, and a red dot with multiplier. I can make an argument for any of those 3 choices. This rifle would be for close in shooting and out to about 100 yards. Regardless of what I choose, it will have iron flip up sights anyway.

Prism scopes offer simplicity, etched glass reticle, glass clarity and possibly magnification. Low power variable scopes probably offer the best glass quality, good close in vision on 1x, etched reticle, magnification and possibly illuminated reticle. The red dot with magnifier offers red dot eye relief and placement forgiveness, clarified dot when used with the magnifier and obviously magnification.

Have you used 2 or more of these options and decided to go with one over the other? Please share your thoughts. Thanks in advance.


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I don't have any RDS/magnifier. The RDS is a non-starter for me, with 59 year old eyes.



I do have prisms in 1X, 3X, and 5X, and a couple LPVO scopes. Primary Arms stuff.

Between the prisms and the LPVO, it's kind of a toss up. I probably like the 3X prism the best for a simple all-arounder. The LPVO offers some added versatility, but it's heavier and bulkier too.

Choices, choices.

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Here's something to consider.

Comparing the 1X prism to the 1-6x24 dialed to 1X. In this situation, the reticle on the 1X prism appears quite small. The reticle on the LPVO (2d focal plane model) appears large.

I like the large reticle much better in that comparison.

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The red dot looks so bad for me that I'd rather use iron sights if I had nothing else. The red dot coupled with the magnifier offered a sharp dot but the glass wasn't as clear as other choices. Yeah choices choices.


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Originally Posted by JakeBlues
This rifle would be for close in shooting and out to about 100 yards. Regardless of what I choose, it will have iron flip up sights anyway.


Everyone's eyes are different, but for </=100 yards I wouldn't worry about it. Let it flare into a big blog blob, and fire away grin

I have the astigmatism too, and see a "comet" shaped blob instead of a red "dot". That said, I don't find it to be a problem unless I am shooting at 300+ yards.

Are you certain that the RDS is the problem?

Last edited by 4th_point; 09/08/20.
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I have it as well and prefer low power variables, since I can focus the reticle. That said, I have an Aimpiint Carbine Optic, and it’s great. My particular brand of astigmatism makes red dots look like an infinity symbol oriented at 45 degrees. I just aim with the same part of the symbol, and make sure the dinner is set to the lowest setting with a visible dot to reduce flare and it works well.

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I have LPVO’s and red dots. I have astigmatism too.

I used to think LPVO’s were the best for me and I suppose they are more versatile but for close range speed shooting, there is no doubt a red dot is faster. I have always cleaned up the dot by using the rear sight and finally figured out that you don’t need a crisp dot up close and at distance you have time to use the sights with the dot and they enhance each other. We were making solid hits on a 2/3rd size silhouette at 300 yards.

I’ve not used a magnifier but looking through one I don’t see the benefit over the extra weight, expense and bulk.

If I had one gun, it’d have a LPVO but given the time to choose for each situation I do like a red dot.

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I use a burris 1X6 on mine. I have an astigmatism too.

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What 4th and TWR said. Have pretty bad astigmatism, too. Not just one comet tail.

Perfect is the enemy of good enough. Am still better, faster with RDS. To 200 yds anyway. With/without iron cowitness to help.

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I heard for some people, wearing polarizing glasses help quite a bit.


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I have and use the Primary Arms prism scopes. I have the 1x Cyclops , the new 2x GLX model and the older 3x scope. I love the 1x and the new 2x model. The older 3x has short eye relief and small field of view.

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Thanks, I was looking at the cyclops too.


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I'm no eye doctor but I wonder if there are any red dot sights that have some kind of diopter ring that would allow for some mitigation. If you wear your prescription glasses, do you still have the dot issues>


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Just came across this Bushnell prism scope that's 1x and only weighs 4 1/2 ounces without the mount and has an adjustable diopter. Anyone looked at this?

https://www.bushnell.com/red-dots/tac-optics/lil-p-1x-prism-tac-optics-red-dot-sight/BU-BT71XPS.html


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Eotech works well for me. As my astigmatism gets worse im moving away from red dots.

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I've got an eotech, an aimpoint, 2 Sig's and I find it odd that the Sigs have a cleaner dot to my eyes than the Aimpoint. Trying different red dots might make a difference.

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Originally Posted by JakeBlues
Just came across this Bushnell prism scope that's 1x and only weighs 4 1/2 ounces without the mount and has an adjustable diopter. Anyone looked at this?

https://www.bushnell.com/red-dots/tac-optics/lil-p-1x-prism-tac-optics-red-dot-sight/BU-BT71XPS.html


I've considered it too, but don't have any good intel on it and don't care for most devices with push buttons.

I still feel that you're overthinking the problem. Unless your astigmatism is really bad, I don't think you should have a problem with a RDS at 100 yards. If you do, are you sure that it isn't the rifle itself or ammo?

With my astigmatism, I've hit 12" plates at 300 yards with my .338 Magnum using a RDS. And my AR rifles with RDS actually shoot as well for me, or better, than using a 2.5x prism at 50 -100 yards. Go figure.

Last edited by 4th_point; 09/08/20.
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In the same situation. It is indeed bad enough for me to not want to use RDS. A $60 reflex sight looks better. Might try a prism. Standing by for someone to tell me what I see shouldn't bother me...... Thanks in advance. Love LPVs but want something else in the dark. Open sights are fun as hell too, in the light. Subscribed.


Maybe?
https://www.primaryarms.com/primary-arms-slx-3x32mm-gen-iii-prism-scope-with-acss-556-cqb-m2-reticle


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I am using a Leupold VXR Patrol, LPVO with a firedot. At its lowest setting I can see red dot fairly sharp, most times leave it off using lowest magnification setting.Astigmatism sucks especially now at age 63.


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Originally Posted by MtnBoomer
In the same situation. It is indeed bad enough for me to not want to use RDS. A $60 reflex sight looks better. Might try a prism. Standing by for someone to tell me what I see shouldn't bother me...... Thanks in advance. Love LPVs but want something else in the dark. Open sights are fun as hell too, in the light. Subscribed.


Maybe?
https://www.primaryarms.com/primary-arms-slx-3x32mm-gen-iii-prism-scope-with-acss-556-cqb-m2-reticle


I just got one of those 3X with the 5.56 ACSS reticles in, a few days ago. Haven't got it mounted /zero'd yet, but it looks a little safer to shoot now (fire conditions).

I have had the 3X with the 7.62x39 ACSS reticle for a couple years. I like it a lot.

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Not all red dots are created equal. To my eyes, Holosun red dots are far better than the Eotechs and Aimpoints I've used. Currently running Holosun 510C's and a 530G Elite.

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Often, the 1moa dots in the circle-dot reticles are more defined. I’d agree the Sig/Holosun stuff seems cleaner than others. I like LPVs, but have some prisms that are good, as well. Personally, I feel I’m as fast and accurate with a trijicon 1-4 and their triangle, as anything I’ve used, issued or bought. My little VX2 1-4 w/ German #1 ain’t no slouch, but it’s not illuminated.

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Originally Posted by JakeBlues
I have astigmatism. As most people know, astigmatism causes havoc when using non "multiplied" red dots. I would love to use a red dot for the eye relief and eye placement forgiveness when moving but I'm not hitting anything when it looks like a Rorschach inkblot.

I'm struggling with a decision on an AR optic between a prism scope, a low power variable scope, and a red dot with multiplier. I can make an argument for any of those 3 choices. This rifle would be for close in shooting and out to about 100 yards. Regardless of what I choose, it will have iron flip up sights anyway.

Prism scopes offer simplicity, etched glass reticle, glass clarity and possibly magnification. Low power variable scopes probably offer the best glass quality, good close in vision on 1x, etched reticle, magnification and possibly illuminated reticle. The red dot with magnifier offers red dot eye relief and placement forgiveness, clarified dot when used with the magnifier and obviously magnification.

Have you used 2 or more of these options and decided to go with one over the other? Please share your thoughts. Thanks in advance.


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I also have astigmatism.I have used the PA red dots, Eotechs, and LPVO. My favorite, even with the weight, is my SWFA 1-6.


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Originally Posted by MontanaMarine
Originally Posted by MtnBoomer
In the same situation. It is indeed bad enough for me to not want to use RDS. A $60 reflex sight looks better. Might try a prism. Standing by for someone to tell me what I see shouldn't bother me...... Thanks in advance. Love LPVs but want something else in the dark. Open sights are fun as hell too, in the light. Subscribed.


Maybe?
https://www.primaryarms.com/primary-arms-slx-3x32mm-gen-iii-prism-scope-with-acss-556-cqb-m2-reticle


I just got one of those 3X with the 5.56 ACSS reticles in, a few days ago. Haven't got it mounted /zero'd yet, but it looks a little safer to shoot now (fire conditions).

I have had the 3X with the 7.62x39 ACSS reticle for a couple years. I like it a lot.



Ordered it today, .556 version. Appreciate your input. Probably going to need a couple more uppers, for testing. wink


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I think I may go with the 1x prism. Can't imagine shooting anything outside 100 yds with subsonic rounds.


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Same situation here.
I don't care for the short eye relief on the prism.
I sent mine back to primary arms.
I'd go SWFA 1-4 or 1-6

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I have the same astigmatism issue you do. I have opted for low power scopes as the thin and close reticles look like just two lines crossing instead of 4 lines crossing. I have to be wearing my glasses as well. I had to give up iron sights because I kept seeing 2 front sight posts. I got the right post about 50% of the time.

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I also have astigmatism, but pretty minor I think. RDS look like small star. Still very usable for me. I have a variety of LPVOs and a couple RDS at the moment. No fixed prism experience. I reach for LPVOs or traditional (A1) carry handle irons nearly every time. I'd say get a good LPVO and be set for the all reasonable uses of 5.56 with a good mix of precision and speed. RDS with a magnifer is nothing but compromises with no upside in my opinion

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Originally Posted by JakeBlues

Going to try one? 4.4 oz, 3.5" eye relief. Tiny bugger, like you sorta look around it and through it at the same time.... Curious..



Curious too about a set of tritium, aperture and post sights. That'd be functional maybe?


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at 1X with both eyes open, the rifle up to your shoulder, bright illuminated reticle and based on some personal research the gun is fairly fast if your actually aiming to hit the target at 10-25 yards, I am not good enough to be able to tell the difference in speed between an aimpoint or a 1-X. I am sure people that shoot competition will be able to tell. What makes the biggest difference to me, is rested fire at 100 or more yards, the 4 or 6 X side of the device is much more useful than an aimpoint and at the prices of new aimpoints forget them.


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Got one of those 3X Prisms from Primary Arms Shane mentioned. Best spot for it seemed to be this Ruger pistol in 556. From the specs I wondered about eye relief, and eyebox. Gladly, neither seem they'll be an issue. Usable from three brace positions. Hope to get sighted in in soon, but no starburst, perfectly crisp reticle illuminated or not.


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Boomer, is there a diopter focus on the ocular?


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Originally Posted by NVhntr
Boomer, is there a diopter focus on the ocular?


Yes there is.


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Thanks!


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