Using an Illuminated Scope As Occluded Optical Sight?

[HGM22]

I have some questions about using an illuminated scope as an occluded optical sight.

1. How fast is it (compared to a red dot)?
2. Does it work with all illuminated scopes at all magnifications (including adjustable magnification scope)?
3. Does it work with prism scopes?
4. How much easier is it to see the reticle with front cover down vs. open? I think I'd struggle acquiring the reticle without the cover being down.
5. Any pros/cons to the set-up?

 

[4thPointOfContact]

1. Never tried an A v. B test
2. I've always had my 1x4x scope set at 1x when attempting
3. Dunno
4. I had the cover down when trying to use as an OES, otherwise it was just a 1x scope that I was looking through
5 Someone with much more knowledge than I (an ophthalmologist, I think) wrote in one of the forums that it can be done but at longer ranges the parallax(?) became a problem as there's a difference between looking at the dot with a pupil directly behind the dot and looking at the dot with a displaced pupil. The displacement was significant enough to make it a No-Go, at least with an ACOG.

eta: https://www.google.com/search?num=4.......0...1c.1.64.serp..23.10.742.0.ZB6UrWobFNI

 

[OpticsPlanet]

Sherman, set the wayback machine for the early 80's...

I had an Armson OEG (Occluded Eye Gunsight) back in the day. it had a fiber optic and a tritium ampule, and was intended for use exactly as you describe.

It worked well for me, but some of my shooting buddies just could not deal with it - they were never able to merge the two images. Mine was on a .30 Carbine M1 for a number of years.

Go here, and scroll down to a post by UXB:
https://www.ar15.com/archive/topic.html?b=3&f=123&t=314682

After 30-some years, the tritium is unusable, but it's a moot point - I now have a blood clot where the retina joins the optic nerve in my right eye, causing a dead zone with no sight. The OEG doesn't work so well with only one eye...

Mark H.

 

[Jeff White]

It worked well for me, but some of my shooting buddies just could not deal with it - they were never able to merge the two images.

You have to have binocular vision to use an occluded eye gun sight. I teach using the Aimpoint as one in my carbine classes as a confidence builder for people who ware worried they will lose the use of their sight if the front lens gets covered in mud.

I've never tried it with an illuminate reticle on a magnified optic. I can't imagine why you'd want to except in a close up emergency engagement. Most people I know who do the kind of work that makes that a possibility use another aiming method for that application.

 

[HGM22]

I want to use a 5x prism scope as an occluded optical sight because I believe it would be faster to cover up the front lens than to remove the scope even with QD (assuming a close-up emergency).