Sight in distance for Eotech
- Thread starter Musky Hunter
- Start date
I hope you're referring to your zero group. The AR is not an olympic tack driver, its a combat rifle designed for combat accuracy. Much the same way that CCO's and reddots are designed.
TDC
Well, as I only shoot paper (I'm not one going into the sandbox) and the Eotech is on my "CQB" AR, on the range I shoot off hand groups with it up to 25m (which is the zero distance). Past that I can't really shoot nice off hand groups, so (on the 50m range) I shoot objects (bowling pins or clay targets). That's what I meant.
I zero mine at 25m as it's on a .308, so a 25m zero is roughly a 200m zero as well.
The furthest I have shot mine at is 640m. That is not my preferred optic for that range though! It was just an experiment.
The furthest I have shot mine at is 640m. That is not my preferred optic for that range though! It was just an experiment.
I don't mean to criticize but who cares what groups a short barreled AR can produce. Do you not participate in any action shooting events? I don't understand the purpose of building or buying an AR (especially short barreled ones) with the sole intention of shooting it either from the bench, or for groups. A nice group is always appreciated, but the system wasn't designed for it and any rifle setup for CQB shooting should be shot for reasonable groups with the emphasis on speed.
TDC
Fair enough. I wasn't singling you out. I'm simply trying to understand the fetish with building CQB or other similar "fighting rifles" then complaining that they won't shoot sub MOA groups, or running said system from the bench only.
A benched or bagged rifle should print some nice groups. A consistent rifle is important for zeroing your irons/optic. From that point on the key to tight groups lies in the shooter and is directly affected by range as well(I'm talking about off hand shooting).
Understanding the limitations of your gear and having a defined purpose/role in mind when building a system will greatly alleviate any wasted funds, time, or effort. What I see in a lot of builds is the disease known as "everythingitis". People want their rifles to do it all. CQB, patrol, sniper, squad support, etc etc. This results in 15 pound rifles that fail to excel at any role.
Bipods on 11" guns with reddot optics and a vertical grip makes no sense. Much the same way a magnified optic on the same 11" gun used in three gun matches at close range makes no sense.
TDC
- Location
- BC, In a Van down by the river!
Book says 50 yrds...any concensus? That remington calculator is interesting, seems to back the 50 yrd. call.
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- Location
- BC, In a Van down by the river!
KevinB is right(again
) I like that calculator, 50yrds seems to work most consistently from close in to 200 yards. But the argument about 75yr zero is good too. I guess 50-75yrd is best. I'm going to go with 50. This statetment is interesting from a previous post:There are some people using 25 yard zeroes, based on the fact that 25 yards and closer is where the majority of their shooting will take place, but this creates a couple of problems. First, even with a 25 yard zero, once you get 20 yards and closer you'll still have to compensate for the offset between the sights and barrel because the POI will be 2-2.5 inches lower than your POA. With body shots this may not be an issue, but for headshots, especially in a hostage situation, it is critical. The second problem with a 25 yard zero is that if you do need to take a shot from extended distances your POI will be way off. For example a shot from 100 yards with a 25 yard zero will have a POI around 6-9 inches high, again depending on weapon variables. Having to compensate for this much difference between POA and POI can be difficult, especially under stress.
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If you go to the Federal Premium site, under the resources tab, they have a "ballistics application".
You can choose any load that Federal makes, specifiy the sight height above the barrel, and indicate what your zero will be.
A little bit of trial and error will let you figure out which zero will work well for your rifle and the distances that you shoot at. As many folks here have pointed out, 50 meters is a good distance to zero your AR at, as that will mean that your POI is within 2 inches of your POA from 25 meters out past 225 meters.
You can choose any load that Federal makes, specifiy the sight height above the barrel, and indicate what your zero will be.
A little bit of trial and error will let you figure out which zero will work well for your rifle and the distances that you shoot at. As many folks here have pointed out, 50 meters is a good distance to zero your AR at, as that will mean that your POI is within 2 inches of your POA from 25 meters out past 225 meters.
