New Upper, What Caliber?

Discussion in 'AR-15 Discussion' started by Olympus, Sep 6, 2012.

  1. Olympus

    Olympus New Member

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    Thinking about buying my first alternate complete upper in a different caliber. However, I'm not really certain what caliber I should go with. I'm thinking 7.62x.39 since it's still relatively cheap to shoot and I like that caliber as an option for whitetail hunting also. But there are just so many different calibers for the AR platform that I really don't know what I should be considering.

    Any recommendations on calibers and good places to shop for them?
     
  2. dog2000tj

    dog2000tj New Member

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    458SOCOM ... go big or go home ;)
     

  3. ineverFTF

    ineverFTF New Member

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    7.62x39

    Is a an excellent choice for cheap shooting, and hell even a few deer at 150 yards or less.

    Go practical or go home :p
     
  4. Dillinger

    Dillinger New Member

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    Hate to disagree with my young padwan, but 7.62 x 39mm is a HORRIBLE choice for a platform built for accuracy like the AR.

    The trajectory of a battleship and the range of 200 or maybe 300 yards at best if you angle for the third star off the moon and hope for the best. ;)

    You want cheap ammo, fun to shoot, an abundance of the stuff on the shelf and you didn't mention range being a factor?

    .22lr drop in conversion.

    Now, factor in the whitetail and I am thinking one cartridge for you.

    6.5 Grendel. 140 grain bullets down to about 90 grains. Good and effective out to about 750 yards.

    Lots of quality uppers for sale available in 6.5 Grendel to choose from.

    Just sayin'

    JD
     
  5. ineverFTF

    ineverFTF New Member

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    I understand the 7.62x39 is no sniper round, but is it really so bad it wouldn't hold a decent pattern at 150 yards?
     
  6. Olympus

    Olympus New Member

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    I don't think the .458 or the 6.5 are going to be a viable option. Primary function would be plinking and fun shooting with a secondary option of hunting. I've got a ton of hunting rifles, so this wouldn't be a big deal. As long as it will hold a 3" group at 100 yards, that would be acceptable with me. I don't typically hunt in terrain where shots are over 100 yards. And if I did, I'd be bringing a different gun altogether.

    No way I'm doing a .22 or 9mm upper. Got enough .22s and 9mms.

    Another option is completely scrapping the second upper option and go with a M1 Carbine. Been in love with that gun ever since the first time I shot one. I would be purely a fun shooter. And since I reload, the straight walled case makes things much easier to reload for.
     
    Last edited: Sep 6, 2012
  7. Dillinger

    Dillinger New Member

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    It loses almost 2.5" in flight, but loses 40% of it's energy from 0' to 150 yards.

    Add to that the fact that "match grade" and "foreign bloc" are not words ever found together in the ammunition buying realm and the short answer is:

    Yes, it can group a pattern, in a gun that was designed to shoot much better and in the hands of a shooter that is FAR more capable than the round deserves. ;)

    JD
     
    Last edited: Sep 6, 2012
  8. ineverFTF

    ineverFTF New Member

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    What about a 243 upper?

    Ammo is cheaper than 458 and 6.5 by a long shot (pun intended).

    And at 100 you have plenty of kill power.
     
  9. ineverFTF

    ineverFTF New Member

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    Thanks for the lesson.
     
  10. Dillinger

    Dillinger New Member

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    Well hell, you aren't making this easy.

    How about .45 ACP? You obviously have plenty of it. ;)
     
  11. superc

    superc Member

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    For close range deer hunting with an AR 15 lower? I think you would be hard pressed to find something better than .50 Beowulf.
     
  12. Olympus

    Olympus New Member

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    Missed the part about the primary function being plinking and range fun. A .50 Beowulf isn't exactly an inexpensive round.
     
  13. Olympus

    Olympus New Member

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    Not really looking for a pistol caliber carbine either.
     
  14. ineverFTF

    ineverFTF New Member

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    Maybe a 308? If you want cheap, hard hitting round that is still range friendly why not the 308? At 100 yards the deer will be falling over.
     
  15. Dillinger

    Dillinger New Member

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    :confused: Jesus man, you are doing a good job of shooting down ideas. Do you have your mind made up on the 7.62x39 and just needed a push? :confused:

    How about a .460 Rowland upper? Or a .221 Fireball upper?

    I have heard of a .17HMR upper, but I have never seen such an animal.
     
  16. Dillinger

    Dillinger New Member

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    .308 needs the bigger AR-10 platform Padwan. Good idea though.

    WSM and WSSM are super expensive and don't fit the criteria.
     
  17. Olympus

    Olympus New Member

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    I'm really just looking for a fairly inexpensive centerfire rifle round that could serve a plinking and possibly hunting purpose. My mind isnt made either way. I'm just trying to weigh my options.

    Saw a .17HMR upper at my LGS today actually.
     
  18. tacticalfun

    tacticalfun Active Member

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    Get a few..458 .450 .50 .308 .338 .22 .17 5.7 22.250. I own 4 of those and will never tell you which ones or ill feel the wrath of cane
     
  19. ineverFTF

    ineverFTF New Member

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    222 Remington would probably fit the bill.

    Cheap enough ammo, available uppers, and powerful enough for deer under 100 yards.
     
  20. superc

    superc Member

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    You can a cheap plinking upper, or you can have a good, but probably expensive, deer round. If you are serious about either, then I suggest keeping them apart.