308 groups

Discussion in 'Long Range Hunting & Shooting' started by DCGS, Mar 21, 2011.

  1. DCGS

    DCGS Official LRH SPONSOR

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    What can a shooter expect from a 308 22inch barrel as far as groups at 500 yds? I would like the norm not the exception. Do you think barrrel length plays a part in the group size at longer distances ? Dan
     
  2. BountyHunter

    BountyHunter Well-Known Member

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    Factory or custom barrel?

    sporter or heavy barrel?

    Factory heavy on average 1-1.5 MOA. Some much better and some worse.

    Factory sporter- 2-3 MOA at 500,

    Custom heavy expect 3-6" under normal conditions.

    All will require loads developed for that gun.

    BH
     
  3. rscott5028

    rscott5028 Well-Known Member

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    I concur with BountyHunter and would add that for 308 @ 500yds or less, a shorter 22" factory barrel may actually be advantageous as it would be stiffer and possibly more accurate than a longer barrel of the same weight.

    Also, I don't think you can count on better than MOA @ 500yds if there's very much wind at all for the average factory rifle/shooter.
     
  4. DCGS

    DCGS Official LRH SPONSOR

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    15 palma contour custon barrel trued Remington action.
     
  5. texan79

    texan79 Well-Known Member

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    I would expect a custom to shoot 1 MOA at a minimum.
     
  6. long450

    long450 Well-Known Member

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    In no wind, with a good rest,MOA.
     
  7. liltank

    liltank Well-Known Member

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    I just remembered that I had shot a 3.5" group at 580 yards with an 18" barreled 308. I was using 41.0grn IMR4895, F210M, shooting prone out of the bed of my truck. Velocity was right around 2450fps.

    Tank
     
  8. rscott5028

    rscott5028 Well-Known Member

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    Tank,

    Nice shooting. How many shots?

    regarding the OP...

    Is that the "norm" for you with any 308?

    Is that the "norm" for that particular rifle?

    Or, was it just an example of a group that you were pleased/displeased with?

    thanks,
    richard
     
  9. liltank

    liltank Well-Known Member

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    Answers to questions in bold!

    Tank
     
  10. rscott5028

    rscott5028 Well-Known Member

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    Tank,

    Thanks for the update. Very nice shooting! My son's not quite there yet. But, we're working on it.

    Thanks!
    Richard
     
  11. Yoshie

    Yoshie Member

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    I have a 308 remington VTR 22" barrel (24" with the muzzle break). After working up a load for it, i am able to shoot a consistant MOA at 550 yards. I feel that the shorter barrels are ideal if you are only looking for short distances. as long as thickness/contour stays the same; the shorter the barrel the more stiff it is(stiff usually = accuracy).

    In short, the short barrel is quite capable of acceptable accuracy.

    I would tend to look at other factors with greater importance. if you cannot read the wind or hold your gun steady, then that should be fixed first!

    a 15 palma contour custom barrel on a trued Remington action should be able to shoot half minute at 500 yards, now if the shooter is capable(or if the wind is bad) that would be another story.
     
  12. rscott5028

    rscott5028 Well-Known Member

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    It might also depend on whether you're talking about the classic 3 shot group that people often go by for hunting rifles or 20 shot strings as in F-Class.

    I'm thinking the X ring is ~.5 MOA and I don't hear about that many perfect scores.

    As others have stated, wind becomes a significant factor at 500yds+ and the more shooting you do, the more you have to contend with wind. So, competetive shooters with custom guns probably have the worst averages since they shoot in all conditions.

    -- richard
     
  13. jflester

    jflester Well-Known Member

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    Nothing fancy here, just a simple Marlin xL 7 over the counter 308. No alterations, all factory. Using RL15/45gr and 165 SST. 0.75 at 100yds.

    For what I do, its all I need. And I feel comfortable with it out to 600 yds, no sweat!