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7/7/2010 12:57:24 PM EDT
OK, the Army TM is kinda vague on zeroing the ACOG.  Now when we zero iron sites we have the rear site set at 8/3 +1 click. After zero we go back to 8/3 and now it is pretty much zeroed for 300-meters.  Now when we do the ACOG and zero at 25-meters, are there any additional clicks after the fact?  This will be on a rail mount, not on the carry handle.
7/7/2010 1:01:30 PM EDT
[#1]
to zero an ACOG at 25m you have to use the 300m BDC....this way you'll have an approximate POA-POI from 100 to 600m using the correct BDC
7/7/2010 1:23:23 PM EDT
[#2]
Which model do you have?  I know the TA31ECOS manual states 25 yds but the TA31F manual states 36 meters with the 300 meter post.  Is it the Army telling you to zero at 25?
7/7/2010 2:34:31 PM EDT
[#3]
On an M4, I think you just zero the 300 meter mark at 25 meters. No matter how you zero it though, you should try and confirm at 100 meters or 300 meters.
Dustin
7/7/2010 2:45:24 PM EDT
[#4]
+1 to the above.

Zero at 25 meters with the 300 yard stadia. Then confirm 100 meter zero with the center crosshair as soon as possible.
7/7/2010 3:15:38 PM EDT
[#5]


I've been waiting for an updated manual from Trijicon that covers the horseshoe reticle.



Anyone know what the aiming points are?




7/7/2010 3:25:21 PM EDT
[#6]
Quoted:

I've been waiting for an updated manual from Trijicon that covers the horseshoe reticle.

Anyone know what the aiming points are?

http://www.trijicon.com/parts/TA33G-H_GreenHorseweb.jpg


My guess would be the center is 100 meters and the bottom of the circle is 300 meters.
Dustin
7/7/2010 4:05:57 PM EDT
[#7]
Quoted:

I've been waiting for an updated manual from Trijicon that covers the horseshoe reticle.

Anyone know what the aiming points are?

http://www.trijicon.com/parts/TA33G-H_GreenHorseweb.jpg




Center dot is 0-200m.  Zero the dot POA/POI at 100m and you will be set.  The ring means nothing.

7/7/2010 7:37:59 PM EDT
[#8]
Yeah, on the horseshoe the center dot is 100 yards/meters, the tip of the lit line is 300 yards/meters.
7/8/2010 8:08:11 PM EDT
[#9]
7/8/2010 10:02:15 PM EDT
[#10]
Quoted:

I've been waiting for an updated manual from Trijicon that covers the horseshoe reticle.

Anyone know what the aiming points are?

http://www.trijicon.com/parts/TA33G-H_GreenHorseweb.jpg


<facepalm>
7/9/2010 4:50:12 PM EDT
[#11]
When  using the  Standard 25m US Army  Zeroing Target  for a  M4 carbine  when  using a issue  TA31F (TA31RCO-M4CP) mounted to the rail,   How  many clicks  do you make  when you want to  one square to the  right or left ????

Also  in summer of 08 i saw  25m Acog  (TA31F) zeroing target   i haven't seen them since  i was wondering if  any company  sold these ???
7/9/2010 5:12:11 PM EDT
[#12]




Quoted:



Quoted:



I've been waiting for an updated manual from Trijicon that covers the horseshoe reticle.



Anyone know what the aiming points are?



http://www.trijicon.com/parts/TA33G-H_GreenHorseweb.jpg




<facepalm>


Sorry, I don't get the facepalm. Am I supposed to guess that the dot is a 100 yard zero? It looks like it could be a 200 yard zero. Or did I miss the information Trijicon released?



(Thanks to the other folks for the help.)

7/12/2010 4:46:33 AM EDT
[#13]
Quoted:
When  using the  Standard 25m US Army  Zeroing Target  for a  M4 carbine  when  using a issue  TA31F (TA31RCO-M4CP) mounted to the rail,   How  many clicks  do you make  when you want to  one square to the  right or left ????

Also  in summer of 08 i saw  25m Acog  (TA31F) zeroing target   i haven't seen them since  i was wondering if  any company  sold these ???


About 3 clicks per inch at 100 yds, so about 11 clicks per inch at 25 m. Each square is 1 cm which would be about 4 clicks. I personally just make adjustments until I am POI/POA.
Dustin
7/12/2010 7:42:32 AM EDT
[#14]
Quoted:

Quoted:
Quoted:

I've been waiting for an updated manual from Trijicon that covers the horseshoe reticle.

Anyone know what the aiming points are?

http://www.trijicon.com/parts/TA33G-H_GreenHorseweb.jpg


<facepalm>

Sorry, I don't get the facepalm. Am I supposed to guess that the dot is a 100 yard zero? It looks like it could be a 200 yard zero. Or did I miss the information Trijicon released?

(Thanks to the other folks for the help.)


You asked and I answered you per the info from Trijicon rep at Camp Lejeune.  I will stop trying to help you if you do not believe me when I post my answers.

Center dot is 0-200m. Zero the dot POA/POI at 100m and you will be set.

7/12/2010 2:35:53 PM EDT
[#15]
I don't have this model or the literature,
but IIRC, with the TA11 donut:
top is 100
center is 50/200
bottom = 300.
BDC stadia follows after.....

this formula looks like it may work w/ yours, the proportions are the same.......

(eta) I have forgotten about, nor have seen 25/300 zero text, but this looks like it would work.
never thought about it, when that close, I just close my eyes
7/12/2010 10:39:49 PM EDT
[#16]
Quoted:

Quoted:
Quoted:

I've been waiting for an updated manual from Trijicon that covers the horseshoe reticle.

Anyone know what the aiming points are?

http://www.trijicon.com/parts/TA33G-H_GreenHorseweb.jpg


<facepalm>

Sorry, I don't get the facepalm. Am I supposed to guess that the dot is a 100 yard zero? It looks like it could be a 200 yard zero. Or did I miss the information Trijicon released?

(Thanks to the other folks for the help.)


Two dead giveaways are that the dot is the finest point in the reticle, and the dot is at the height where a torso would be at 150 meters-follow the parabola shape of the BDC. The whole idea is to match up a torso with the lines on the reticle stadia, with the circle being as wide as a torso at 100 meters. The goal with the circle/Dot reticles according to Trijicon's LE rep is that if you size the reticle like this, if the reticle is half filled, you've got a real good chance of getting a hit on target, if the target is as wide as a torso.

This is a combat optic, not a paper punching scope. It is made to shoot at people, who average 19" in their torso width. Once you zero the aiming point at 100m, you just size up the torso by elevating the gun until the stadia lines match the torso and the bullet drop is taken care of. There is no stadia line for 100m because the circle is set for 150m, with 150 meters being a better compromise than 100 out to 300 given the range most 5.56 rifles will be shot at. The Missing line at the bottom of the circle is the 300 meter mark. The idea is combat speed over finite aiming.
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