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Posted: 12/15/2014 7:48:03 PM EDT
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Gents- I managed to buy one of the ACOGs from AMAZON on a Lightning Deal- which means I got a normally 1200-1300 scope/mount for $820, which I intend to drop on a Colt LE901 .308. Wasn't paying enough attention to buy a $200 ACOG unfortunately....
This ACOG has the .308 range compensating reticle with dual illuminated crosshairs. (Amber). Model is TA11J308-A, which is 3.5x35 mm. The crosshair in the center is fine, and on the right/left/bottom there are heavier crosshair marks that are for close in/quick use. The bottom crosshair fine line is extended for range finding with cross hatches. The fine crosshair in the center is what is illuminated. The issue is that the illuminated reticle crosshair on the right side is illuminated about 1/3 longer than on the left, so the lit crosshair appears totally lopsided to me. I unfortunately have a very good eye for angles/regularity/etc, so it stands out and I will surely notice it every time I use the scope. If I add a lot of light to the light pickup tube it blooms out and semi-illuminates a bigger but more even crosshair area, so I don't know if that is how much is supposed to be illuminated or whether that is just over-lighting bleed over. On the Trijicon website it shows the crosshair as being more even. I am unable to find any photos on the web of an illuminated reticle of the same design. The .223 and .308 versions are similar, only the range finding cross hatches are different. Anyhow- the question for persons with experience with these is whether this is a normal variability found with this type of reticle? If so, how common of a problem, and what are the chances of getting a better one if I send it back for a different one? The scope is clearly usable as it is, I just worry that I might spend an extra second when aiming to adjust for the uneven lit crosshair. I only own one other ACOG (an original TA-01 with range finding crosshair, and that safe queen is still burning strong well past its likely expected lifespan), so my experience with the dual illumination models and this exact reticle is zero. Any help is appreciated. |
| The way the glass is made will result in the right side of the reticle being more blurry towards the end. it should be addressed in the manual or on the sight. I would also recommend covering a bit of the fiber optic tube and see if it reduces the bloom enough to clear up the reticle. |
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The right hand side of the crosshair is blurry. Is this normal? Yes. The reticle pattern in the ACOG is formed by removing highly reflective metal from a prism mirror. This mirror is at about a 45-degree angle inside the gun sight. This means that the left side of the reticle is closer to the eye than the center of the reticle and the right side of the reticle is further from the eye. The result- the right side of the reticle is focused beyond infinity which can cause distortion on the right side of the reticle. The perceived distortion will be more or less depending on an individual's eyesight. The left side of the reticle is unaffected because the human eye has no difficulty focusing on a closer object. This in no way detracts from the performance of the scope. The image of the target area is not affected. Only the right hand side horizontal reticle line is blurry. This construction is required to achieve a parallax free vertical center of the scope, which allows the built in ranging on the reticle pattern. Posted Via AR15.Com Mobile |
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