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AR accuracy issues

Discussion in 'Rifle Country' started by xfyrfiter, Dec 31, 2011.

  1. xfyrfiter

    xfyrfiter Well-Known Member

    I am having a problem that I can't seem to solve. I own A Stag #1 in .556 and can't seem to get the accuracy I think it should have, ie. minute of peach basket, rather than moa. This is with various loads and bullet weights from 50 gr. at the small end, to 68 gr. at the upper, factory or hand load, either one. Any help or suggestion would be appreciated .Thanks in advance.
  2. ApacheCoTodd

    ApacheCoTodd Well-Known Member

    What's the barrel length and twist rate?
  3. proven

    proven Well-Known Member

    what sights are you using and at what range? don't take this the wrong way, but can you shoot anything else accurately? just trying to get somewhere to reference from. i.e., if you can shoot a .22lr at 50 yds and hit a coke can consistently, but can't do the same with your ar, then yes, we have a problem.
  4. LoonWulf

    LoonWulf Well-Known Member

    you probably already checked but are all the screws and bits tight? flash hider, gas block, etc?
  5. mljdeckard

    mljdeckard Well-Known Member

    I need to echo proven, we have to ask, have you put it on a sandbag?
  6. xfyrfiter

    xfyrfiter Well-Known Member

    16 inch barrel, aperture sight, or scope, 1 in9 twist rate ,checked all of the above, and yes i can shoot ie. my 10/22 off the same bag, 3/8 inch 10 shot group at 30 yards. I would like to get some use out of this rifle but I am at a loss. thanks
  7. ApacheCoTodd

    ApacheCoTodd Well-Known Member

    OK, 16', 1/9? I'd get a single box of Federal Match 69gr, confirm the stability of the rifle and the marksmanship of the firer and if you can't get (just for argument's sake) under 2 inches at 50 yards - send 'er back with a well worded letter regarding your concerns and the conditions under which you were disappointed. Things happen with all manufacturers and I wouldn't want my mistake out there if it was shooting as poorly as you say yours is.

    Keep these following things in mind as manufacturers listen to folk on a daily basis who believe they "purchased" marksmanship.

    By far, with quality manufacturers, most accuracy complaints can actually be attributed to:
    -upkeep of the firearm
    -unrealistic expectations
    Last edited: Dec 31, 2011
  8. taliv

    taliv Moderator

    i had this problem last year with an expensive big name AR. Would get like, 4-6" groups at 50 yards. i tried all the things you did. eventually sent it back. they replicated the problem, but couldn't figure out why. they replaced the barrel and sent it back. no issues now.

    i'd call the mfg. it's annoying, but it happens
  9. Texas Bob

    Texas Bob Well-Known Member

    You need to take two or better yet, three other friends with you to the range. At 50yds set up four "shoot'n'see" targets and compare the results from a five shot string of fire for all of you. If the firearm is "off" this will give you something to show to mfg., or you may find the problem is you, no disrespect meant. Bob
  10. xfyrfiter

    xfyrfiter Well-Known Member

    Thanks for the responses, now at least I have a direction to go.
  11. kfgk14

    kfgk14 Well-Known Member

    Definitely spend some time at the range with good ammo (buy some prvi partisan 69 grain match ammo) and a big group of guys who you know can shoot. Compare the 5 shot groups at 50 yards. Also, chrome-lined barrels just don't necessarily shoot that well, if that is what you have.
  12. proven

    proven Well-Known Member

    good luck, and let us know how it turns out. if it's their issue, hopefully they will make it right.
  13. rcmodel

    rcmodel Member in memoriam

    Any chrome lined barrel that won't shoot under 2MOA with good ammo most certainly is defective.

    My old Colt SP1 Carbine shoots under 1 MOA with handloads and it's chrome lined.

  14. proven

    proven Well-Known Member

    kfgk14, a chrome lined bbl should easily give under 2 inches at fifty yards unless it's complete crap.
  15. rcmodel

    rcmodel Member in memoriam

    It should give 2" at 100 yards with good varmint or match bullets or it is crap.

    Expect 3" or 4" or more with FMJ-BT GI type bullets.

  16. ms6852

    ms6852 Well-Known Member

    Most AR platforms are going to be 1.5 to 2 MOA. It is just the nature of the platform. Also a lot of the ammo available or that we purchase is real cheap or mil surplus which adds to the variables. Unless you purchase match ammo at $25 plus for 20 you may be able to get 1 moa at 100 yds.

    I purchased the Rock River Arms predator pursuit which guarantees .75 moa @ 100 with match ammo. I ended up shooting several brands of match ammo and bullet weight and only found one brand that my rifle liked. I was able to shoot a 5 shot group measuring .680 at 100 yards using Hornady Superformance 55 gr.

    You must realize that the AR platform is a 22 caliber rifle that like most 22 rimfires it too can be very finicky. I also realized that I had to be very deliberate with all of movements, sight alignment, breath hold, and important trigger control. ONLY then did I shoot below the gauranteed .75 moa.
  17. velocette

    velocette Well-Known Member

    My RRA 24", 1:8 heavy barrel rifle shot 3"+ patterns @ 100yds with Fed 55 gr FMJ ammo, 3"+ patterns with 55 gr Dogtown (Midway) bullets.
    Then I fed it Fed Gold Medal Match 69 gr ammo & it gave me 3/4" groups, Then I handloaded the same Sierra 69gr HPBT match bullet over RE15 & got 7/16" groups when I hit the powder charge the rifle liked. It also likes 77 gr Hornady Amax bullets (single loaded) shooting less than 1/2" groups. All the above with a bipod & rear bag.

    Accuracy in an AR is there to be had, just with good ammo & a good barrel. The rest is up to you.

  18. wingman

    wingman Well-Known Member

    My stag model 3 started at 2.0 @100yards but with reloading and a Geissele
    trigger it now groups at .750 if I do my part, chrome barrel and all.;)
  19. tkcomer

    tkcomer Well-Known Member

    You can pull your hair out trying to get a consistent sub MOA with any gun. Ammo is the key, but some guns just won't shoot MOA regardless. I can show you 3 shots touching with all my ARs. But do a 10 shot group, and they are really 2” MOA guns no matter what I shoot through them. 10 shots is the key to what a gun will really do. If you can't shoot MOA with 10 shots, your gun or you are not capable of MOA groups. There's people and guns that can do it. In truth, they're far and few between.
  20. briansmithwins

    briansmithwins Well-Known Member

    Pull the muzzle device and check for crown damage.

    Try twisting the barrel in the upper. A loose barrel nut will cause huge groups too.


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