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Caliber Question

Discussion in 'General Firearm Discussion' started by tank3d, Jan 13, 2012.

  1. tank3d

    tank3d Eugene Member

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    I am looking into getting a rifle chambered in .308.

    It it my understanding that this rifle can also shoot 7.62 NATO rounds...yes,no?

    what is the difference between 7.62*51 and 7.62*39?...is there a difference? Can the .308 rifle shoot both?
     
  2. Nwcid

    Nwcid Yakima and N of Spokane Well-Known Member

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    Technically .308 and 7.62 Nato (7.62x51) are the same size but loaded to slightly different pressures. You can shoot either in either but most suggest you dont shoot .308 in a 7.62 nato due to the higher pressure.

    The difference in 7.62x39mm and 7.62x51mm is they are a completely different round and one is 12mm longer. ALL .30 caliber guns are 7.62 mm in diameter so there are many 7.62x XXmm guns out there and they are NOT interchangeable. For example .30-06 would be 7.62x63 and .300 WM would be 7.62x67.
     
  3. tank3d

    tank3d Eugene Member

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    Thank you!
     
  4. 1stIDFMP

    1stIDFMP North of Salem, south of Portland Active Member

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    Nwcid - very nicely done........ :thumbup:
     
  5. tahoe2

    tahoe2 Seattle area, Washington state Member

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    the term 7.62 is thrown around rather loosely, and for those not entirely educated in firearms nomenclature it can be rather confusing.
    30-30, 30-40, 308, 30-06, 7.62x51, 7.62x54, 7.62x63. Personally I have a .300 Savage and I love it, but most that I encounter
    have never heard of it!
     
  6. tahoe2

    tahoe2 Seattle area, Washington state Member

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    the term 7.62 is thrown around rather loosely, and for those not entirely educated in firearms nomenclature it can be rather confusing.
    30-30, 30-40, 308, 30-06, 7.62x51, 7.62x54, 7.62x63. Personally I have a .300 Savage and I love it, but most that I encounter
    have never heard of it!
     
  7. oldbrass

    oldbrass WA Active Member

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    The cases are loaded differently also, the military brass has a crimped primer. this is so the primer doesn`t come lose during full automatic fire..
    you can reload milsurp brass but only after deburring the primer pocket
     
  8. civilian75

    civilian75 Hillsboro, OR Well-Known Member

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  9. RVTECH

    RVTECH LaPine Well-Known Member

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    Also 7.62 NATO brass can vary in thickness and this can cause reloading problems, particularly with resizing. Neck wall thickness can sometime cause problems with rifles that are chambered specifically for .308 Winchester.