is 308 actually the same as 7.6wx51

Discussion in 'General Rifle Discussion' started by greeney, Apr 25, 2013.

  1. greeney

    greeney New Member

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    I bought some ammo from a buddy. He just has a bunch of surplus. He brought me 40 rounds. Some of it is stamped 7.62, some is 308. I know the 5.56 v 223 debate runs long and hard. I just want to k ow if this is a similar thing or if they are in fact universal to eachother.
     
  2. greeney

    greeney New Member

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    It is a stevens 200 stamped in 308. I know the guy won't buy junk or sketchy stuff so my guess is just that he mixed some surplus in with others. Guess ill try to find an answer from savage.
     

  3. c3shooter

    c3shooter Administrator Staff Member

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    ATTENTION, PLEASE !!


    Thank you!

    7.62x51 is the full metric designation for 7.62 NATO.

    There is no such thing as .308 NATO. There IS a .308 Winchester.

    Externally, the .308 and 7.62 NATO CARTRIDGES are the same. The CHAMBERS are different, as is the brass. NATO brass is thicker, so is smaller inside.

    In general, you should not shoot .308 in a gun marked 7.62 NATO. You CAN shoot 7.62 NATO in a gun marked .308. If reloading cartridges, do not use .308 load data in 7.62 brass- pressures will be higher.
     
  4. longunner

    longunner New Member

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    So if you have a gun marked .308 winchester you can shoot .308win AND 7.62 NATO?
     
  5. greeney

    greeney New Member

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    It seems we are getting two different responses. If the NATO brass is thicker than wouldn't it be a slower load Ed round? Or is it a different powder which Burman hotter thus giving you a hotter round?
     
  6. hardluk1

    hardluk1 Active Member

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    Some have pressure levels backwords. The 7.62x51 nato has a max pressure level of 60,200psi
    The 308 win has a PSI of 62,000.

    Shoot all the 7.62x51 in a 308 you want too. DO NOT shoot the 308 in a 7.62x51 nato chambered semi-auto or auto rifle
    Also so 308 tends to be a faster round when bullet weights are the same. Wiki can be your friend along with loading data!!
     
  7. JWagner

    JWagner New Member

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  8. smarquez

    smarquez New Member

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    I don't see how you can hurt a modern rifle firing either ammo. I thought it was all about pressure. There are differences but not dangerously so. I have about 500 rounds through a 93 Mauser in 7.62. I always shot M80 7.62 because that was what was cheap. I think you would see higher pressure in .308 commercial loads.
     
  9. c3shooter

    c3shooter Administrator Staff Member

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    Longgunner- that is correct. A .308 Winchester can shoot .308 OR 7.62 NATO. A 7.62 NATO should NOT shoot .308 Winchester.

    It is the exact opposite of the .5.56/ .223 situation.
     
  10. greeney

    greeney New Member

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    C3 I am glad you used that exact phrase. Thank you
     
  11. longunner

    longunner New Member

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    That's what I was wondering. Thanks and good to know, glad I got a .308win :D
     
  12. 303tom

    303tom Well-Known Member

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    I shoot .308 in my 2A & 2A1`s all the time...................
     
  13. monroe45CAL

    monroe45CAL New Member

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    Steel or brass case?.......
     
  14. Cattledog

    Cattledog New Member

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    Do NOT shoot commercial 308 win from a 7.62X51 NATO chamber. You will destroy your headspacing at the very least.
     
  15. Jagermeister

    Jagermeister New Member

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    I have practiced with the Nato round with My CZ-550. It is safe, but dirties your gun very quickly. Shorter barrel rifles will see .308 shooting 1 or 2 inches higher at 100 meters then the Nato rounds.