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Centerfire Rifles - Semiautomatic or Gas Operated Centerfire rifles, carbines and other gas operated rifles. |
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#1
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Hello fellow calgunners! I've been learning a lot about my AR-15 as I've been shooting (I'm an AR newb) and I've been wondering, how far should I set my sights for zero? Of course in our great state of California this is not a HD gun, just for general range use and maybe some tactical carbine classes in the future. I've been told 100 yard zero is good, but why not 50 yards? Any advice is welcome!
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Springfield Armory 1911-A1 Loaded Custom Build AR-15 |
#5
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In the military we usually BZO our ACOGS at 36 yards I believe. They told us 36 yds simulates 300 because of the arc of the bullet.
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HM2(FMF) Earl NRA Life Member...Are you?!?! Can't wait to be DEEP SEA!!! "The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants. It is it's natural manure." Thomas Jefferson 1787 ![]() |
#6
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If I remember correctly...we set ours at 25 yards = 100 yards considering arc. 55 grain....1/9 twist
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![]() Retired LEO (25 years trying to stop people from doing something stupid) Retired Paramedic (25 years trying to save their lives after they did something stupid) |
#10
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I just zeroed my irons in at 100 yards and my EOtech at 75 yards yesterday. Had to go to BLM to get those distances though.
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In 1988, America was strong. We had Ronald Reagan, Steve Jobs, Johnny Cash, and Bob Hope. Today, we have Obama, no Jobs, no Cash, and no Hope. |
#13
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250
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#15
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the ar-15 is made to be zeroed in at 25 meters and then fine tuned at 300 set the settings on your rear sight to 8/3 6/3 what ever your sight has and sight it is at 25 meters it will be on paper at 300 and just needs fine tuning!
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Come on, you sons of *****es! Do you want to live forever? GySgt. Daniel J. "Dan" Daly, USMC Remington 700 tactical 308 Rock River Arms Elite Operator 2 DPMS LR-308 Sig 2022 PRO 40. Taurus 24/7 45. |
#17
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As a range plinker 50 works for me too. Plus I only have a pair of 7x binos to spot with so until I pony up for a good spotting scope 50 is gonna have to do.
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I don't measure a man's success by how high he climbs but how high he bounces when he hits bottom. George S. Patton It is impossible to defeat an ignorant man in argument. William G. McAdoo |
#19
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There are a ton of topics on zeroing AR.
Summary of it: 1. Pull out BCG 2. Place upper on a stable mount/clamp/bags/etc 3. Look thru rear of upper thru barrel to intended yard for zeroing (25,5075,100,etc yards) and place center of bore as close to X as possible. 4. Look at irons/scope and zero to target. 5. Replace AR BcG and test fire. You should at least hit paper. For OP question, I zero 25. |
#20
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Zero at 1000 inches (if possible), then confirm/fine tune at 300.
I'll admit to having been lazy and sighted "range toy" ARs at 50 yards and don't notice much, if any difference at 100 yards (as far as I can accurately shoot with iron sights these days).
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I'm retired. That's right, retired. I don't want to hear about the cop who stopped you today or how you didn't think you should get a ticket. That just makes me grumpy! |
#22
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I'm zeroed to 200. Zeroing to 50 is fine but don't expect to be zeroed to 200 because of theoretical trajectory equivalents. Those equivalents are only good for specific loads and specific barrel lengths. Unless you are chronographing your loads out of your rifle, you never really know.
However, it still may be good enough depending on your personal tolerances for precision.
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"When you get the (men) to the range, you just get the men. But when you bring the (women) to the range, you get the (whole family). And that's what's going to save our 2nd Amendment."--Dianna Liedorff "Since self-preservation is the 1st law of nature, we assert the...right to self-defense. The Constitution...clearly affirms the right of every American...to bear arms. And as Americans, we will not give up a single right guaranteed under the Constitution." --Malcolm X |
#23
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Running a RDS sight 50/200 or a 1-4 magnified RDS 25/300
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#25
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ACOGs are typically zeroed at 100y to match the BDC reticle. Generally, you'll want to find the BDC subtensions (that define your MOA drops) and see how that matches to your load, barrel length and bullet choice.
AimPoints/EOTechs do not have a BDC (except the EOTech 557/EXPS 3-4) so those are typically zeroed at 50/200 to take advantage of the relatively flat trajectory out to 250y. |
#26
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The reason you are not getting many answers is this subject has been beaten to death. Every other day somebody asks the same question. I suggest using the search tool for indebth information on the subject. I could give you a 5 page argument in favor of the 25 yard zero, but frankly I've made that argument enough and am really tired of repeating myself every couple of days. The search tool is your friend.
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#28
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@tacticalcity well being that I'm accessing the site from my iPhone, it's not easy to do an Internet search of calguns. I understand people ask the same question over and over, and sometimes it is annoying, but isn't that what the fourm is for at the end of the day? You don't have to enter the thread and post remarks like you did and probably do often. Like most wise people say, if you don't have anything nice to say....
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#31
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100% True
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In memory of Ricky Lee Turner, January 16th 2009 Baghdad Iraq In memory of Rogelio Antonio Ramirez, August 26th 2007 Saqlawiyah Iraq "most people quick to go to war haven't seen it."- unknown Check out my YouTube page http://www.youtube.com/user/DJCBX/videos |
#32
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A 36 or 300yd (same thing in respect to the sights) with a 100 yd confirmation is the optimal zero for an ar15.
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Sure, I've been called a xenophobe, but the truth is, I'm not. I honestly just feel that America is the best country and the other countries aren't as good. That used to be called patriotism.
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#35
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it helps to understand the ballistic trajectory of the 5.56/.223 round before you decide what zero to use.
this should help http://www.ar15.com/forums/t_3_18/512335_.html |
#36
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Here you go in visual form
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I support peace through superior firepower. "Para ser libre, un hombre debe tener tres cosas, la tierra, una educacion y un fusil. Siempre un fusil ! (To be free, a man must have three things; land, an education and a rifle. Always a rifle)" -Emiliano Zapata. |
#37
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50 yards zero with any 1x optics.
(or specific zero'ing distances for your optics) I've done a lot of ballistic calculations and simulations to convince myself that 50yds zero is very effective for CQB/Patrol distances. For XM193, 55gr bullets 50yds zero = zero also @ 200yds And ballistically, from zero to somewhere around 225, you will be + or - 2.5" POA/POI. This means that anywhere from 0-225, you should be able to put your rounds inside a 5" diameter circle if you do your job; ie. you should be able to get your round to your center mass even accounting for the ammo accuracy and the bullet flight drop.
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- LL NRA Certified Firearm Instructor ![]() New to Calguns, check here first: http://www.calguns.net/calgunforum/s...ad.php?t=56818 Last edited by Jicko; 05-21-2012 at 10:09 PM.. |
#39
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The bullet flight paths are good.... but for the EOTech reticle..... the ring is 65MOA, hence @ 100yds, a 5'5" person should be just inside "the ring"; hence a typical 6' person would just be probably from the top of the top hash to the bottom of the bottom hash..... and not have just the head and neck @ the ring...
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- LL NRA Certified Firearm Instructor ![]() New to Calguns, check here first: http://www.calguns.net/calgunforum/s...ad.php?t=56818 |
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