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Posted: 8/11/2010 2:05:45 PM EDT
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I have a TA33 that I just put on a 18in upper. I took it out today and was a little confused. At 25 yards I was using the 300 aiming point like it says in the manual and it was impacting 8 inches High. I then took the mount/ACOG off the gun and reinstalled it. No change. I then turned the elevation knobs far enough to get it sighted in. I moved out to 100 yards and finished zeroing it. I feel like it was a little extreme to have to adjust it that much. Thoughts? I did buy the ACOG used so is it possible that the previous owner had sighted it in for his gun that shot really low? Any issues with Parallax or my reticule from messing with the elevation adjustments so much? I'm using the standard ACOG mound. The one with the big 2 bolts on the side. TA60. This one If I flip the mount 180 degrees will that change anything? I know it says in the manual to sight in at 100m and I took that into consideration. |
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I wouldn't worry about it. But if you really want to, find the mechanical zero and see how far that is off from where you're at now. To find mechanical zero, turn the knobs until they bottom out. Count the number of clicks so that you can get back to where you are now. Then run the knob all the way in the other direction, counting the clicks as you go. Once you bottom out on the other side, divide the total number of clicks by two. Your mechanical zero will be that many clicks from either direction. |
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Quoted:
I wouldn't worry about it. But if you really want to, find the mechanical zero and see how far that is off from where you're at now. To find mechanical zero, turn the knobs until they bottom out. Count the number of clicks so that you can get back to where you are now. Then run the knob all the way in the other direction, counting the clicks as you go. Once you bottom out on the other side, divide the total number of clicks by two. Your mechanical zero will be that many clicks from either direction. this. |
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Trijicon manual says that adjustment to the extreme ends of the range can result in damage to the internal adjustment mechanism... So don't turn the knobs until they bottom out.
Also, the manual says do not continue to adjust windage and elevation mechanisms if you encounter resistance. That's from the manual that came with my TA31H-G, so It may or may not be true for the TA33. |
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Quoted: Trijicon manual says that adjustment to the extreme ends of the range can result in damage to the internal adjustment mechanism... So don't turn the knobs until they bottom out. Also, the manual says do not continue to adjust windage and elevation mechanisms if you encounter resistance. That's from the manual that came with my TA31H-G, so It may or may not be true for the TA33. That's what mine says. But how do I know where the extremes are? I didn't encounter any resistance that seemed bad. |
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Try bumping the turrets after adjustments. This helped me out a lot. Same same here, I had issues with my TA-33, then saw someone else @ the range with a Trijicon smack it with a mag. I asked why he was doing that, and was told that it helps seat the prism. Worked for me. YMMV |
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100 clicks???????
You sure you have a real Acog? Maybe the original owner had the acog in another mount or had it on a riser of some sort. ..... I don't think you can go over a hundred clicks with a Acog.... I could be wrong, but either you are not explaining yourself right or something... Makes my brain hurt... 
So far all I got is.... You put the acog on your gun then shot a target at 25 yards using the 300 yard bdc right?...... Why? You do know that every gun differs and just because you take a sight off another gun and put it on yours, it doesn't mean that it is zero'd in. Zero your acog at 100 yards and call it a day.... If it doesn't hold zero, then when you turn your dials before you take your first shot, smack the side and top of the acog a few hard times, then fire. Repeat everytime you turn the dials. |
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Quoted: 100 clicks??????? You sure you have a real Acog? Maybe the original owner had the acog in another mount or had it on a riser of some sort. ..... I don't think you can go over a hundred clicks with a Acog.... I could be wrong, but either you are not explaining yourself right or something... Makes my brain hurt... So far all I got is.... You put the acog on your gun then shot a target at 25 yards using the 300 yard bdc right?...... Why? You do know that every gun differs and just because you take a sight off another gun and put it on yours, it doesn't mean that it is zero'd in. Zero your acog at 100 yards and call it a day.... If it doesn't hold zero, then when you turn your dials before you take your first shot, smack the side and top of the acog a few hard times, then fire. Repeat everytime you turn the dials. I had to get a rough zero at 25 since I was a couple feet off at 100 yards. Once I was close at 25 I moved to 100 to finish zeroing. The 300 BDC approximates 25 yards. I did turn it close to 100 clicks to get it zeroed. I'm pretty sure I have a real ACOG. The glass is clear. It has the serial number written twice. Warning about Tritium, Made in USA, Came with all the proper box/accessories, Tritium works great. |
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