Trying out a Burris RT-3

Jayne

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I was looking for a tiny magnified optic for a project and grabbed one of the Burris RT-3 3x prism scopes (off amazon, was cheaper than anywhere else).

The reviews talking about minimal eye relief are correct, I couldn't use this for any application other than an AR. If you mount it right on the rear of the upper it works very well, easy to acquire and all that. Anywhere else... nope. Looks odd back there, like someone mounting a red dot in the wrong place, but that's how it goes.

It does that ACOG thing, when you look at the target for a moment it somehow flips from a fuzzy red dot to the 3x magnified view. I still don't know how that works.

The etched reticle has ranging capabilities but I don't think my eyes are good enough to use them anymore. It does show up nicely in daylight, and there are illumination settings that are daylight bright. There is a big jump between dim enough for inside and bright enough for outside, it's like there are some missing settings in the middle there. We'll see how that works out in various light conditions over time.

Next up will be getting it zeroed.

I actually had it mounted up on my poverty pony rifle since that's the one I use more than anything but it's so small and light I moved it to the 'good' lightweight AR that I never actually shoot. This gives me an excuse to get it to the range.


RT-3.jpg
 
Question. I tend to be a “nose to the charging handle” kinda guy. Is that your method as well? IOW, would “I” be likely to mount this in a more normal position?
 
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Question. I tend to be a “nose to the charging handle” kinda guy. Is that your method as well? IOW, would “I” be likely to mount this in a more normal position?

Normal in that people who assume its a red dot and you're not a moron for mounting too far back? Dunno.

It's got 2.5" of eye relief, so you could center it on the upper if you really run your nose at the charging handle. I'm hanging back a bit but I'm not traditionally an AR shooter so I run big glass on long rifles with lots of room to stretch out.
 
Got it zeroed today, and I gotta say... I'm starting to like it. It's nice that its 'just there', don't have to worry about turning in on/off or making sure it's on the right power or anything just pick up the rifle and you're ready to go. Didn't run any drills against paper silhouettes or anything close range to test it's ability to mimic a red dot, those will have to come later.

I put a 25 yard zero on it, and when I switched over to the 100 yard plates I was kinda upset that I couldn't hit a damn thing. I could see them just fine, but every shot was a miss. Eventually I figured it out.... I'm just not used to ARs and things with a 25 yard zero (I'm a bolt action 100 yard zero sorta shooter). Putting the dot on the plate at 100 gets you nothing, but if you put the plate above the dot like this:

target.jpg
it hits every time. Now that I'm back home, it's obvious from something like this:

1623173748256.png

that doing a center hold puts the bullet 6"+ high at 100 which isn't going to land on a 6" plate, and really really not going to get me there at 200.

I need to rethink my zero since most of my AR shooting is at 100-250 yards, or 10.
 
Sounds like a 50yd zero would serve you better. 50yd zero is +/-2” from 0-220yd.
 
This optic seems to be designed for a 200 yard zero.
 
Put the 50/200 zero on it today, much better. Easily hitting plates without doing crazy holds out to 250 (max our range goes).

Had a 2nd person check it out today, and they agree that the clarity and reticle are pretty nice. He did say that the way it's mounted on there to work with the limited eye relief is going to get a lot of comments from people saying "your red dot is too far back" and that you'll look like you don't know what you're doing.

Guess I'll have to chance it.

Next up is to setup some close range stuff and try it out as a standard red dot for close in fast work.
 
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The fuzzy magic you report occurring in your first post is the “Bindon Aiming Concept” that Trijicon marketed heavily with the introduction of the ACOG.

Basically, if you “see” the illuminated reticle without looking “at” the image in the eyebox (target-focused shooting, both eyes open, with the optic in your eyeline), the prism sight works just like an OEG (e.g. the Armson or the old Weaver Qwik-Point). You see your target clearly, but your brain has no choice it to super-impose the illuminated reticle on that target image.

This works well at close range, but POI shifts off POA can become pretty significant as you get further out due to astigmatism. If you really want to get a feel for how that system works on your rifle and optic, cover the objective lense with a lens cap (or block it with some tape), turn on the illuminated reticle, and get shooting. You’ll be able to figure out its limitations for accuracy with your eyes in short order.

When you stop looking “through” the sight and focus on the eyebox image (looking “at” the image), you use the prism exactly like a traditional fixed riflescope.
 
, cover the objective lense with a lens cap (or block it with some tape), turn on the illuminated reticle, and get shooting.

I was looking for flip caps to fit it for just that purpose.

and "fuzzy magic" is a better name than "Bindon Aiming Concept", I mean, who's going to remember that? :)
 
A holdover is a holdover is a holdover, doesn't matter if it's with a S&B on a $3,000 bolt or this optic on an AR. But it indeed does some playing around to get used to it.

I have heard good things about this optic, and I am glad it's working for you!
 
We had a little review posted on this optic last year for anybody that missed it:

 
Normal in that people who assume its a red dot and you're not a moron for mounting too far back? Dunno.

It's got 2.5" of eye relief, so you could center it on the upper if you really run your nose at the charging handle. I'm hanging back a bit but I'm not traditionally an AR shooter so I run big glass on long rifles with lots of room to stretch out.

Got a few of those types of comments on this gun. Most people don't understand what a prism sight is. Being 1x, it wasn't the tight eye relief of a magnified prism like an acog, but the tight window annoyed me in the same way. Had to bail on it. But dang that lightness and compactness sure was nice.

I wish they make more of these prism options. Few choices and a lot of goofy gimmicky reticles.

IMG_0492.jpg
 
Got a few of those types of comments on this gun. Most people don't understand what a prism sight is.

Maybe it should come with a t-shirt that says "it's a prism optic, you wouldn't understand" to keep the range commandos at bay?
 
Maybe it should come with a t-shirt that says "it's a prism optic, you wouldn't understand" to keep the range commandos at bay?

I have to amend that slightly: "It's a prism sight and a competition rifle, go back to Arfcom and COD".
 
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