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Posted: 12/27/2008 9:26:20 PM EDT
| I'm looking for a decent 25m zero procedure for ta31 acog RCO as issued by the Big Army. At this point, the data sheet (not even provided w/ a manual) says put the 300m reticle on a target at 25m and impact should be 1.5cm below POA to give a zero out to 300m. I found the AF zero procedure, and I'm reading it to mean put the 300m reticle on target and all rounds should be in 2cm circle at POA to give a 100 - 600m zero. I have not been able to find any acog TM's online. Anyone have a better procedure or link to manuals? For me, anything longer than 25 is not an option... Unless you know a longer range at COB Basra... Thanks.. |
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Using a standard M16 25m zeroing target, place the bottom "edges" of the chevron flush against the central horizontal line, and vertical line right through the point of the chevron.
Your rounds should impact approximately 1.3 blocks below the center of mass of the silhouette. The width of the chevron should correspond exactly with the width of the shoulders of the silhouette. If you're Army, go on AKO, and look for the TA31F manual: ST 23-31-1: GFM-TA31F SUPPLEMENT MANUAL or better yet, look for the SAIB (Small Arms Integration Book). Both documents should provide you not only with directions, but also a copy of the designated 25m zeroing target for the M4 Carbine. HTH, ~Augee |
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Quoted:
Here you go. Use and be safe. Save if you will, I will remove in 2 days. http://i139.photobucket.com/albums/q319/amynruss/ACOG31.jpg scottrh2, why remove it? this will help lots of people. |
Thanks for the quick replies. Especially for the target. I'm new to ACOG's, and not happy with the Army's idea of training on new equipment. I'm at the point where I'm going to just have all ACOG's removed, as I only have access to a 25m range, and will not be able to properly zero.. I'm pulling the SAIB off AKO right now. 
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Quoted:
I'm at the point where I'm going to just have all ACOG's removed, as I only have access to a 25m range, and will not be able to properly zero.. Would strongly recommend against this. You can zero just fine at 25m using the zeroing procedure outlined by the target. 100m is suggested for confirmation. Do when/if you can, but 25m zero will get you on target. Not sure what your job/position is exactly, but the ACOG is definitely something you want at least some soldiers carrying downrange, and it's worthwhile enough IMHO that in addition to the ones we were issued, I brought two of my personally owned ones with me, and they both got put to good use. Feel free to e-mail me if you need more help/information that's not in the SAIB, but don't pull the ACOGs off the line unless they are broke. ~Augee |
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It's easy.
Top of the chevron on his head (or top of the vertical BDC line at center of mass) at 25 meters for a 300m hold. If you don't rely on the squares to make your adjustments, you can actually use this method with any standard M16/M4 zero target. ETA: Impact with this method will be center-of-mass on the target. |
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Using two different types of TA31F zero targets (1 Trijicon supplied and 1 USArmy issue) both measure 1 1/2" center to center.
So it would appear that for 25m if your round hits at or just about 1 1/2" below your POA you will be in the ballpark till you can confirm later at 100m. These are the same two targets we are now using with the M150RCO. |
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We always zero at 25 meters/yards using the 300 line. It will put you within a few inches at 100 and you can adjust later if you like but most guys find the 25m zero good enough. You can zero the BUIS using the 300 line at the 25m range also. FYI: many of the 25M ranges are actually 25 yards. Some of the older ones are 27 yards (1000 inches). All of these will get you in the game if you zero using the 300m line.
PLEASE DON"T TAKE THEM OFF!!!!! |
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Well, I'm going to keep them. Doing PTT here and have several ACOG's in the PLT. We were able to save some CQM rounds at Beuring and had about 20 mins to get a Near-o. I'll use these targets and get all the ACOG's close as possible.
On another topic, has anyone used ACOG's on 249's? The manual says that it can be done, but how is it firing? The eye releif is so short that it seems like it wouldn't be the best for an automatic weapon... |
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Due to the eye-relief, if I was going to out an ACOG on a SAW, I would go with a TA11 model, little bit longer eye relief, but at the penalty of length and weight.
IMHO, the ACOG has the most potential and is the biggest force multiplier when mounted on a rifle (M4/M16). I'll assume you've got M68s as well, IMHO, if you want to mount an optic to the SAW, the best is to just use a CCO, remove the spacer from the factory QRP or QRP II mount, depending on the version you have, and use that. I think we also needed to reverse the mount to fit it on them on the top cover rail. 
~Augee |
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Not sure if you can turn the mount around on the new M4 model Aimpoints. Maybe someone who has one can check it out.
Honestly, I don't have a SAW with railed top cover, nor an M4 Aimpoint on hand to check, but IIRC, with the Aimpoint mount in the "proper" orientation, because of the knob placement, and the geometry of the feed tray cover, the QRP mount wouldn't fit on the rail, or if it did, it was too far forward, and interfered with opening the cover to load the weapon, so we turned the mounts around for the 249s. With the QRP, it was pretty simple, since it's just a simple 30mm ring. With the QRP II mount, the mount interfaces directly with the optic, so I don't know how well it will work. My best advice would be to try it, and see what you can do to make it work. Otherwise, see if you can't get the older M2 style CCOs for that application. IIRC, the torque limiting knob on the QRP II is supposed to be lower profile than the QRP mount, so it may work as designed on the SAW. I would say it would be nice if LT would just make a mount for the SAW, though I think the current mounts would work anyways, but then again, if your unit's anything like mine, they're not going to buy it for you anyways. 
~Augee |
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