AR Sponsor
Posted: 7/14/2010 10:24:11 AM EDT
|
I Just got back from the range, while I was rocking with the pistol, I cant say the same for my AR skills, I had my red dot all set up and figured I would zero, so
100yds, 8 rds not hits so I dialed it back. 75yds, about 10rds no hits, ran it back again. 50yds 22 rds, 1 hit bottom right of my target. I was doing so well a few weeks ago at 25 with my AK, What am I missing? |
|
First decide at what distance you want to sight it in for. Then look up a trajectory chart for the ammo weight that you are shooting. Determine at what point the bullet should strike at 25 yards (ex. A 62 grain M855 bullet will strike apporximately 0.4" low at 25 yards with a 50 yard zero). Set up your target at 25 yards and mark the point below the target where the bullet should impact (from the trajectory chart). Fire a group at the 25 yard target. Measure from the center of the group to the point where the bullet should have struck (not the target but the spot that you marked) in both x and y axis. Adjust your scope in the direction that you want the bullet to move for both x and y direction (You will need to know what value each click is on your scope and do a little math). Once you are hitting the spot that you marked at 25 yards, move out to your desired zero range and confirm zero. Adjust as necessary.
If you have irons and they are zeroed, cowitnessing the dot should get you close to start with. |
|
you should START at 25 (or less), get on paper, then move. Gotta know where you are hitting with regards to where you are aiming before you can even start to think about zero'ing.
Also you should be using a rest or at least be shooting prone. The more stabile you can get the quicker it will go. J- |
|
Quoted:
Yep! Sight in BUIS first. Target Express is a target printing software. In the military target files, there are large sight-in targets specifically for red-dot sight-ins at 25yds, 50yds, and 50 meters. You can probably buy these types of targets elsewhere, but the download trial is free, and like the "Boogie Motel", its cheap and its easy.
Sight in at 50yd first off do you have a buis? sight that first, and then move the dot accordingly |
| Best bet. The way the Gubmint does it. 25 Meters and it tells you how to adjust the iron sights on the rifle. |
|
You could bore sight it in.
Simple way is to remove the upper and place it on a rest or table. Look thru the barrel at an object 100 yards away. Move the sights so they are at the same place, as you look thru the barrel. If done correctly, you should be on paper @100 yrds. |
|
Quoted:
Question: Are you using the same red-dot sight on the AR that you used on the AK? If so, be advised, the sight will not zero the same for both weapons.
I Just got back from the range, while I was rocking with the pistol, I cant say the same for my AR skills, I had my red dot all set up and figured I would zero, so 100yds, 8 rds not hits so I dialed it back. 75yds, about 10rds no hits, ran it back again. 50yds 22 rds, 1 hit bottom right of my target. I was doing so well a few weeks ago at 25 with my AK, What am I missing? |
|
It would help to know what optic you are using on what weapon platform....then: Fisrt thing to do is boresight the weapon. Pull the upper off of the weapon, pull the bolt carrier group out of the upper, lay it on something like sand bags and look down the bore. Line it up on something close and check to see that your red dot is on whatever you are seeing through the bore. Now, reassemble the weapon. Load several rounds in a magazine and fire at the first target at 25 yards. Measure the distance between the point of aim and the point of impact. Adjust your site so that the point of impact is now the point of aim. You need to know how many minutes of angle each click of your site is. A 1/2 minute of angle click is 1 inch at 100 yds, or 1/4 inch at 25 yards. Once you get where you are hitting the point of aim at 25 yards, move to 50 yards. The ballistic tragectory of a 5.56 round goes through the same plane at 50 yards and comes back down to the same point at 200 yards. Here is a 25 meter zero target for an M-4 with an Eothingy: http://www.eotech-inc.com/documents/M16A4-M4MWS_EOTech_Live_Fire_Target.pdf It's not hard...just remember that each click on your optic shifts the point of impact 'X' distance at 'X' range. Once you get this concept down, it a piece of cake. |
AR Sponsor