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What caliber would you like to see become mainstream in the AR-15?

Discussion in 'Rifle Country' started by Taurus 617 CCW, Jun 26, 2010.

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What caliber should be mainstream for the AR-15?

  1. .204 Ruger

    3 vote(s)
    1.9%
  2. 5.45x39

    6 vote(s)
    3.8%
  3. 5.7x28

    0 vote(s)
    0.0%
  4. 6.5 Grendel

    33 vote(s)
    21.0%
  5. 6.8 SPC

    55 vote(s)
    35.0%
  6. 7.62x39

    38 vote(s)
    24.2%
  7. wildcat/other

    22 vote(s)
    14.0%
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  1. Taurus 617 CCW

    Taurus 617 CCW Member

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    Excluding 5.56/.223, what caliber would you like to see produced on a more regular basis?
     
  2. jpwilly

    jpwilly Member

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    I think 6.8 of the options you've listed for deer etc is the best overall for the platform but for those wanting to squeeze out really long range shots (and if you have a long enough barrel) the 6.5 would be ideal.

    Great 6.8 FAQ here: http://demigodllc.com/~zak/firearms/6.8SPC/faq.php

    Also the .243 / 6mm wildcats would be something to experiment with.

    In the end though the military will most likely just return to using 7.62x51mm long before they'll adapt any of the above...IMO.
     
    Last edited: Jun 26, 2010
  3. ArmedBear

    ArmedBear Member

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    6.8 seems to fall far short of its expectations.

    I'd have to say something along the lines of a WSSM, between 6mm and 7mm, capable of getting good velocity with a 100-120 grain hunting bullet from a standard-sized AR-15 that doesn't weigh too much.

    The AR-10 is just too much gun to lug around, for calibers that fall on the low end of lightweight bolt action rounds, but the regular AR-15 platform can be the right size and weight for field use.

    Otherwise, I don't really care. If it's going to be a toy, a serious paper-punching or gong-clanging gun, or in general a gun too heavy to grab for a hike up a mountain, .223/5.56 is a great caliber, or .308 in the AR-10. The only reason I'd want something else is for hunting.
     
  4. wow6599

    wow6599 Member

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    6.8 would be an improvement I would like to see, JMO though.
     
  5. R.W.Dale

    R.W.Dale Member

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    I agree

    All the other calibers listed are mainstream enough to only be a midwayusa order and credit card bill away. The WSSM's are still very elusive and are only available from a couple sources
     
  6. CornCod

    CornCod Member

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    839
    7.62X25. I know some uppers have been made in this caliber. I would like to see more of them on the market so perhaps the prices can come down. For a small pistol cartridge, its a heck of a round.....and cheap.
     
  7. jem375

    jem375 Member

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    for me the perfect caliber for the ar15 would be 308 as the mainstream caliber for the rifle..........
     
  8. ArmedBear

    ArmedBear Member

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    If the WSSM is rare because it doesn't work all that well, then something with similar case volume, but maybe some different tapers that are designed to feed and eject well in the AR, would be great.
     
  9. R.W.Dale

    R.W.Dale Member

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    That's not what I'm getting from the reports I read.

    I'm taking away that the WSSM's feed better in the AR than any of the bolt guns they were originally intended for due to the straight shot into the chamber from being single stacked in the mag with no taper to jack with feeding.

    Just look at what the cases designed for the AR have in common in little to no taper (Grendel , SPC, 450 .223 ect) But look at the 7.62x39 which actually doesn't work in the AR too well, lots of taper there.

    No the reason there aren't more WSSM's is they require a completely non spec upper, bolt, bbl extension and nut. They are in simplistic terms an AR10 upper shorted to fit on an AR15 lower
     
  10. Victor1Echo

    Victor1Echo Member

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    44 mag.
     
  11. thewilbur

    thewilbur Member

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    I agree wow6599. So would I. Even on a limited basis.
     
  12. GunsBeerFreedom

    GunsBeerFreedom Member

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    Dec 17, 2009
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    335
    The Grendel personally. I always had a soft spot for it and feel it's very under-utilized.
     
  13. Ratdog68

    Ratdog68 Member

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    Nov 16, 2008
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    So long as you do your homework and get one with 1:11 or 1:12 twist with good rifling design and the correct chamber spec... 6.8 SPC II (or 6.8 x 43) the 6.8 perfoms quite nicely. SAAMI spec'd with the faster twist rates and rifling used with the .270 is where the 6.8 isn't able to shine.

    1stShoot001.jpg
     
  14. Dionysusigma

    Dionysusigma Member

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    Another vote for 7.62x25.
     
  15. FirearmsEnthusiast

    FirearmsEnthusiast Member

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    NSW, Australia
    Surprised 7.62x51mm wasn't on the list, that's what I'd vote for.
     
  16. FirearmsEnthusiast

    FirearmsEnthusiast Member

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    :uhoh: lol
     
  17. Taurus 617 CCW

    Taurus 617 CCW Member

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    I did not include 7.62x51 because it belongs in the AR-10 platform. I work for an AR-15 manufacturing facility and was just doing some basic market research for the AR-15 system for possible models in the next year or two. I am a huge fan of the 7.62x51 caliber and do think there is a large amount of growth in the AR-10 market but we just aren't at that point yet. We would have to start a completely new CNC machine line just for the 7.62x51 receivers. Maybe in the next few years we will be heading in that direction.
     
  18. M1key

    M1key Member

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    The caliber it should have been chambered for in the first place...6x45
     
  19. IdahoLT1

    IdahoLT1 Member

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    Boise, Idaho
    I'd like to see the big bore thumpers become more mainstream. The .458 SOCOM, .450 Bushmaster and .50 Beowulf have the most big game utility out of all the calibers that fit the AR15 platform.
     
  20. Mags

    Mags Member

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    I hope 6.8 will become mainstream, my next upper build is going to be 6.8 and I would love to be able to go to any Wal-Mart and pick up a box of 6.8 for 10 bucks. :)
     
  21. wlewisiii

    wlewisiii Member

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    7mm-08 would get me to consider one.

    William
     
  22. Kernel

    Kernel Member

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    Jan 12, 2003
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    77 Square Miles Surrounded by Reality (Madison), W
    7mm WSSM
     
  23. Demitrios

    Demitrios Member

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    Northern NJ
    10mm.
     
  24. 230therapy

    230therapy Member

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    Virginia
    6.5 Grendel.

    The performance is excellent. I'd love to shoot paper with it at 1,000 yards.

    It may not be the do everything caliber, but it sure is versatile.
     
  25. NG VI

    NG VI Member

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    Dec 12, 2007
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    .351 Winchester?
     
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