Did not see where the OP. said it was a NIB buy or new out of box buy. If not NIB could it be shot out. The AR is new too me. Packing
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Did not see where the OP. said it was a NIB buy or new out of box buy. If not NIB could it be shot out. The AR is new too me. Packing
Got to the range today, but it was too stinking hot to do any sighting in. Tried to get up there early, but it was already over 100 degrees and zero shade and very humid. In town, it’s 61 degrees with a cool breeze blowing off the ocean. In the hills, it’s just downright unbearable. When I was younger, I lived for that hot weather. Can’t tolerate it anymore. I’ll have to go back in the early evening hours when it’s cooler to sight it in with the smaller aperture.
So, with the excuse out of the way, here is what I did. I made a crude target out of a larger piece of paper and drew circles with a coffee can and a lid from a juice bottle, and crudely colored the inner circle in. These were clearly visible from 50 yards. Aiming at the top circle with the large aperture, I took 5 shots. These are marked with red dots. Then I flipped to the small aperture, aimed at the top circle, and never hit the paper. I then aimed at the lower circle, and hit the upper circle. These shots are marked with blue dots. These are 1.7-inch spread at 50 yards with iron sights and old eyes. I won’t complain about that. (The green dots are the actual holes with a piece of green paper behind the target so they would stand out). If the red and blue dots are difficult to see and you are a Windows PC, you can click on Ctrl + to zoom in and Ctrl - to zoom back out.
Heavy Metal seemed to have it right with his post
The larger aperture seems easier for me to use as I’m used to it with about 1400 rounds thru the gun which I bought brand new. I guess what I’m failing to understand is why the point of impact changes from one aperture to the other.
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Gary
Will Fly for Food... and more Ammo
Alcohol, Tobacco, & Firearms should be the name of a convenience store, not a government agency.
POA should have read POI.
My brother saw Deliverance and bought a Bow. I saw Deliverance and bought an AR-15.
Hand the rifle to someone who has an M4 and is producing 1-1.5" groups at 50 yards. If they spray rounds all over the place with yours, then you know what the problem is. Otherwise, internet diagnosis is super difficult. Usually internet diagnosis evolves into "You either have a cold, or brain cancer." and I feel like that's what's happening here.
Last edited by WS6; 07-23-13 at 03:39.
You do realize that there are free targets on the net that you can download and print, right?
I would get one and then I would start with 25M death. Then if you establish a zero push it out further.
You can probably accomplish this within 30 rounds or so. Shoot min. 5 round groups.
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No problem with using the large aperture if you want, but it is pretty apparent that you are not getting the most out of your platform with that sighting solution.
Really, 1400 rounds of watching the sight through the rear 0-2 is not a significant reason to disregard the small aperture. It's like saying that you can't watch football because you watched UFC the night before. The same concepts of sight alignment apply, it's simply easier to precisely place the front sight in the center of the small aperture due to the ability to perceive smaller degrees of mis-alignment.
Funny, I thought someone answered that way back.I guess what I’m failing to understand is why the point of impact changes from one aperture to the other.
Many rear sights have different sight planes for the different apertures. They are generally made to give a rough 200 meter zero with the large aperture when the small aperture is zeroed at 300 yards on a 20” gun.
ETA: get some decent targets.
Plenty of them available for download.
You want a target that encourages consistency in front sight placement on the target.
2 ways to approach that:
1) smallest target that you can identify at distance while focusing on the front sight.
2) target that exactly matches the width of the front sight at distance while focusing on the front sight.
As for the targets. I just wanted one large target to see where the rounds with the smaller aperture were going, and tho crude, it served it’s purpose very well. It told me I was shooting 10-inches lower with the larger aperture than with the small aperture. Without that crudely drawn target, It would have been a lot harder to figure out where those rounds with the small aperture were going.
All the targets I normally use are printed off the internet. The one I posted at the beginning of this thread is the one I use the most for iron sights. I can just barely see that red bull at 50 yards. I also have some smaller targets of a different design for my one rifle with a scope. Also have some M16A2 25M zeroing targets I printed when I first got the Colt.
When I have some time and cooler weather, I’ll pull the target into 25 yards and use the smaller aperture and move it back out to 50 yards after zeroing at 25, which is what I did when I got the gun and found out that they come from the factory zeroed at 300 yards. This country is hilly and brushy, and it’s hard to find a place to get more than 50 yards. Part of my problem is most likely due to flinching. I video tape a fair amount of my shooting, and I’m sometimes amazed at what I thought I did and what I did. The stock trigger on the 6920 isn’t the greatest, and I’m rarely surprised when the gun goes off. I am going to put a scope on it sometime in the near future, and I’ll bet once I do that, I’ll probably start thinking about replacing the trigger.
Gary
Will Fly for Food... and more Ammo
Alcohol, Tobacco, & Firearms should be the name of a convenience store, not a government agency.
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