once zeroed, you should have no problem with regular 8x11 printer paper. ive never used a bore sight, i start prone at 25 yards or less and keep moving back and usually do 2 shot groups. once youre windage is on at 50 yards, you want to be about an inch low and usually you can setup at 100 after that. get a big piece of cardboard or stick a bunch of paper targets together and dial it in!
you want to zero so the very top of the chevron is just below your bullseye, the top of the vertical line should be 200 yards/meters and the hashmark 4 is obviously 400 meters. i think these are for 62 grain and 14.5" barrels, but not sure
ACOG 3.5x35 scope with Green Chevron BAC Reticle- The ranging reticle is calibrated for 5.56 (.223 cal) flat-top rifles to 800 meters. Includes Flat Top Adapter. The chevron reticle is designed to be zeroed using the tip at 100 meters. The width of the chevron at the base is 5.53 MOA which is at 19” at 300 meters. This allows range estimation for silhouette targets.
Congrats. I’ve run the very similar TA11E-G on my SCAR for years.
100 meters is the correct zero distance for an ACOG. There is a 25 meter zero, that uses a different POA/POI, but it’s not as precise. I might be wrong, but my understanding of the 25m zero is due to the Army using 25m zeroes for pretty much everything, regardless of what it’s actually intended to be used at.
A target at least the size of a piece of paper would be a good place to start. Bigger might help too, in case your ACOG is way off from where your carbine is shooting.
I believe it is technically meters, but 100 yards is close enough that it will only be off a large amount once you get past 500 yards or so. (At least, according to DOPE book I was given years ago in a DM class).
Tip of the chevron at 100m.
Yes, they can be. Just slapping the ACOG on your AR might put it somewhere near where it shoots, but it can could also be shooting way off. If you choose not to bore sight your AR, it would be a good idea to zero your ACOG at 25m, and then back it out to 100m to properly zero it in.
Use quality ammo, and have a decent sized aiming point. Most of the 100m/yard zero targets I’ve seen on line use a small center dot which is somewhat hard to see using the 3.5x ACOG. I like using the EZE-Score bullseye targets from Wal-Mart because they are easy to see at 100 yards, and help keep a constant sight picture. Also, at 100 yards, lower quality ammo will start to spread out. 2-3 MOA isn’t uncommon with cheap FMJ ammo, so don’t be surprised if your groupings aren’t particularly good. It isn’t you, or the ACOG. Quality ammo helps a lot. (I always start getting pissed at myself for crappy shooting when I try to zero with cheap Ball/FMJ ammo, but then get pleasantly surprised when I switch over to quality factory ammo or reloads).
As stated zero at 100. You can get away generally, with yards or meters as far as I know, but again, as has been stated, you are going to want the 100 meter/yard zero.
You can use a 25 yard/meter improved zero targets to get within the proper zip code, but it does not remove the need to confirm at that distance.