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Posted: 6/25/2005 7:32:47 PM EDT
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Today I bought an Eotech 551 at the local gunshow. It is new in the box and the question is how accurate is this and what is the max range. I have not shot with it yet but noticed that the reticle moves slightly, about 1" play at 20', not sure at greater distances. I am still very happy with this unit though, both eyes open if needed is cool. So this is normal, I should be happy with what I've got. This is not normal, take it back. This is dangerous, send it to an arfcom member for destruction. PS What have you guys found as the most effective way to mount these things? Thanks Joe |
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Joecav, I don't think it's normal and I would have the factory check it out. I'm not sure I understand the question totaaly, but the reticle should not move inside the housing at all. The most effective way to mount this optic IMHO is in the LaRue EOTech QD mount. They Make the best stuff out there, again IMHO. Go to G&R Tactical and see if they have any in stock. They are worth the wait. and you can mount the EOTEch directly to your rail until you get it. Tack |
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I'm totally happy with my EOTech now for about the last two years. Not sure what you mean by "the reticle moves slightly, about 1" play at 20'". I have mine mounted directly on top of my receiver and use a CCH for my BUIS. I have engaged targets out to about 300m with my EOTech, the 1 MOA dot makes for easy and accurate long distance shots. 
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| Let me see if I can clarify alittle. I set the red dot on a target (picture hanging on the wall), and without touching the Eotech, move my head from side to side and up and down. When I do this the red dot moves slightly on the target. I measured out about 20 feet (across the room) and the red dot moves on the target about 1 inch up and down and side to side as measured at the target. I tried this again and it does not matter if the target is one foot or twenty it has the same one inch play when I move my head around so it must be 1" at 100 or 1000 feet also, have to try it tomarrow. Thanks for any input here, Joe. |
Its working fine. The dot indicates the path of the trajectory. The EoTech is paralax free. I cant explain it in tech terms, but you will see the dot move. Keep the dot on the target and it works everytime. |
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You're gonna have that problem at romm distance. When the sun is up tomorrow, set the EOTech on something sturdy pointing out a window at a target more than 50yds away. You should notice that the reticle moves in the screen, but the center dot will remain on target at that distance. BTW, with that little dot, you should be able to get easy hits out to 300-350yds with a little Kentucky elevation. WIZZO EDIT: This is how I mounted my 512. Directly onto the upper receiver rail. 
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+1 That is why EOTechs and Aimpoints are so good. You can move your head around, but as long as you can see the dot on the target, you canmake the shot. BTW, The one MOA center dot will allow you to be as accurate as possible. If you can do your part, you should be able to hit what you are aiming at out to 250 yards or more. Zero the sight at 50 yards and you should be good to go out to 250 |
the eotech is holographic,so if you move your head,the reticle is meant to move.when you go to the range,try to "box it" (no,not the traditional definition).the bullet is meant to hit the dot at whatever zeroed range. so,zero it wherever (i prefer 25m) as well as possible,keeping the dot roughly centered in the window.once you feel you're zeroed,shoot a different target or what have you,by moving the rifle just enough to put the dot in the corners,but on the target where you want your rounds to hit. try it with all four corners.i did this,and shot a not too shabby group.not a perfect group,but i think that was due to an imperfect stock weld because of holding the rifle at a slight angle.that's the great thing about the eotech's holographic reticle,it's fairly forgiving |
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if something is right in front of you face, and you move your head but not the rifle, the reticle will have about an inch play maximum. I have noticed this too. But one inch is acceptable in a room, the farther your target is the smaller the difference. Its hard to explain but you are right. Put the reticle right in front of your face on a book or something pointing at your monitor. move your head around but not the eotech at all. You will notice that you can move the point of aim about an inch without moving the unit at all. This is an effect that only takes place at really really short range, as the farther out you go it is minimized. I will accept that inch, as the easy fix is a consistent stock weild. All these gadgets don't alleviate us from relying on the fundamentals. edited to add: maybe one of you experts can explain this better than I can. But try my experiment out first. |
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The EOTech reticle is focused at almost 100 yds. This is the infinite point of parallax. Anything you focus on past about twelve feet out will appear in focus on the same plane. Hence, the reticle appears in focus no matter where or what distance your target is at. Like every optic that exists, once you come within that 12 foot approximate range (this varies slightly depending on indivudal eyesight, etc.) there is the movement of the reticle. The closer you get to the sight the more it is an effect. However, the maximum this can move in any direction from center is the distance from the center of the window to the edge of it. Since the sight window is about an inch square, this is the maximum the reticle can move from the point of impact. When your target is that close to you, an inch will still be right on target. This effect is true of Aimpoints or any other 1x optic. |
my bad,i was mistaken.thanks for clarifying |
I wanted to co-witness my EO Tech 552 with the iron sights on my Colt CAR flat top. The most effective way for me (NOT the cheapest!) to mount the EOTECH was to use the ARMS Forestock rail system (#50C I think is the model number). It is a bi-level fore stock and works VERY well in conjunction with the EOTECH and Swan folding rear sight. Plus I liked the way it looked! I am very pleased with the fit, finish, versatility and overall craftmanship of the piece. And it was cheap! Here is my Colt dressed:  Closeup of the Arms foregrip:  This is the ARMS Swan folding rear sight (a very nice piece):  |
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I would recommend placing the eotech as far back (close to your face) as possible. The recticule is the same size no matter how far away it is, so having it close to your face, you will be able to see more window in your field of view and can adjust the placement of it in your field of view (sucah as shooitng from awckward positions). If you place it far our front (away from your face) the window will effectively shrink in size and give you a smaller window to look through. Also, focus on the target, not on the recticle. Just go out and shoot it and see. |
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