.308 Ammo.

Discussion in 'Ammunition & Reloading' started by TERRIER, Sep 12, 2008.

  1. TERRIER

    TERRIER New Member

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    Will Someone Tell Me If All 308 Ammo Is Also 7.62 X 51
     
  2. cpttango30

    cpttango30 New Member

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    Yes thy are slightly different. As the 308 win is loaded to a higher pressure than the 7.62x51mm. You can shoot 7.62 in 308 but can't shoot 308 in a 7.62.

    It is just the reverse of of the 223 556 problem.
     

  3. kris

    kris New Member

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    is that right ? should i not be using 5.56 in my .223 all appears ok ?
     
  4. Dillinger

    Dillinger New Member

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    The conventional wisdom is that the Military 5.56 has a higher chamber pressure than the civilian .223. While the round will fit the chamber and go bang, you are running a risk. If you have a 5.56 chamber, you can run the lower pressure .223 civilian version without much danger, you will just see an accuracy difference.

    Your mileage may vary...

    JD
     
  5. BigO01

    BigO01 New Member

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    Anyone have any idea why they didn't just standardize these rounds ? The Performance of the rounds the differences aren't worth talking about while yes the pressures are for safety .
     
  6. Dillinger

    Dillinger New Member

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    Big - Someone, and I can't remember if it's this forum or another one I visit, had posted the specs on the two rounds, side by side, and there were minor differences.

    As to why no one standardized it, I would assume if you look hard enough there will be some stupid lawyer who had some piece of paper that said "no you can't" for the given time of implimentation, and probably nothing more.

    It sure would be nice to get one standardized round today though - since this topic comes up, at least, once a week.... LOL

    JD
     
  7. anm2_man

    anm2_man Member

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  8. c3shooter

    c3shooter Administrator Staff Member

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    They DID standardize the rounds- but they are 2 DIFFERENT rounds.
     
  9. Dillinger

    Dillinger New Member

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    Well, that's not really what I meant - but I do see the point. Touche'

    Point c3.

    JD
     
  10. BigO01

    BigO01 New Member

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    OK the point goes to you .

    Let me rephrase the question , does anyone know why they didn't decide on one of the two rounds and simply discontinue the other ?

    Just what exactly in practical performance is the difference ?
     
  11. cpttango30

    cpttango30 New Member

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    they are exactly the same as far as the 223 and 556. They only difference is the fact that the military is trying to make up for size and weight by increasing velocity.
     
  12. c3shooter

    c3shooter Administrator Staff Member

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    RE: 7.62 NATO and .308 Winchester- I don't work for NATO or Winchester, so this is my best educated guess- OK?

    The NATO round was standardized as a military round, suitable for chambers cut a bit oversized (works even when crud is in the way).

    The .308 was standardized as a civilian HUNTING cartridge- not uncommon to find heavier bullets than standard NATO, loaded hotter, brass is thinner (means greater internal capacity for the case)

    What difference will you find in the performance? In all likelihood, not enough to notice. However, there are some rifles that BARELY make it to 7.62 NATO strength. I would not want to chance bending my dogtags by running HOT .308 loads thru them. Could you? Sure! At least ONCE. :rolleyes: More than that..... ah, what was that quote from Dirty Harry?

    Me, I'll look at the SAAMI website. If they say a cartridge swap is OK, I'll use it. If not, no.
     
  13. RL357Mag

    RL357Mag New Member

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    Also, a good way to ruin a fine hunting rifle, as well as your face, is to use 7.62 x 51 Machine Gun ammo in your fine .308 hunting rifle. Unless you know how to read military headstamps and color codes, it's an easy mistake to make.