Warning

 

Close
Confirm Action

Are you sure you wish to do this?

Cancel Confirm
AR15.COM
AR Sponsor
11/2/2008 3:57:55 PM EDT
Hi guys, I went to the range today to sight in my ACOG on my rifle. I know that this is a AR-15 Forum and my Rifle is a SIG556, so please no bashing I need help. The ACOG is a TA31RCO-M4CP made for the 16in barrel size. It is mounted on a La Rue Lt 100 mount made for the ACOG. I did not bore sight the scope first before I went to Range, I did not think it would be far off. I was not even hitting a 2ftx2ft Target at 100yrds. I do not know even where I was hitting it was that far off! Do I have to get a Laser bore sighter? or do any of you know any tricks that would help. I need to get on paper. The ACOG IS MOUNTED GOOD and tight no movement. Please advise Thanks. Wedgeman
11/2/2008 4:02:27 PM EDT
[#1]
Try zeroing it at 25m first, then move out to 100.  That's what I did for my TA-33.  In the ACOG manual, it gives the procedure for zeroing it.
11/2/2008 4:02:28 PM EDT
[#2]
Quoted:
Hi guys, I went to the range today to sight in my ACOG on my rifle. I know that this is a AR-15 Forum and my Rifle is a SIG556, so please no bashing I need help. The ACOG is a TA31RCO-M4CP made for the 16in barrel size. It is mounted on a La Rue Lt 100 mount made for the ACOG. I did not bore sight the scope first before I went to Range, I did not think it would be far off. I was not even hitting a 2ftx2ft Target at 100yrds. I do not know even where I was hitting it was that far off! Do I have to get a Laser bore sighter? or do any of you know any tricks that would help. I need to get on paper. The ACOG IS MOUNTED GOOD and tight no movement. Please advise Thanks. Wedgeman



Boresight it the old school way.

I took the upper off set it on a counter looking outside.  look down the barrel at something in the distance without moving the upper adjust the scope to be on the same object double check a few time and you should be good to go.

Of course this assumes the 556 upper comes off and the barrel can be looked through
11/2/2008 4:13:17 PM EDT
[#3]
+1 on that advise.
AR Sponsor