Why is 12 guage calld a 12 guage?

Discussion in 'General Shotgun Discussion' started by pistol77, Oct 26, 2012.

  1. pistol77

    pistol77 New Member

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    And a 20 calld a 20?
     
  2. JTJ

    JTJ Well-Known Member Supporter

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    It takes 20 round lead balls to make a pound so it is a 20 gauge. On a 12 gauge it takes 12 round lead balls to make a pound. Original term was bore, not gauge.
     

  3. potentialglock

    potentialglock New Member

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    Correct. So the balls in a 12 gauge are bigger than a twenty and so forth. The .410 is the exception because, (from what I've read) obviously the bore is. 410 inches although it does not earn a gauge name because it cannot support a pound of lead flying down it's barrel. Please correct me if I'm wrong.
     
  4. 303tom

    303tom Well-Known Member

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    .410 is 68 or 69 gauge I think.........
     
  5. potentialglock

    potentialglock New Member

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    Probably but I doubt you'll ever find a factory load with that many pellets. Except maybe bird shot which isn't how you measure gauge.
     
  6. c3shooter

    c3shooter Administrator Staff Member

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    The concept was NOT to put a pound of lead into a shotgun at one time (EGAD! Imagine the recoil!)

    As stated, a round sold lead ball that fitted the bore of a 12 weighed 1/12th of a pound. of a 16, 1/16th, of the 20 g, 1/20th of a lb. etc ad infinitum EXCEPT the .410 and the 9mm shotgun. The .410 began life based on the .44 rifle cartridge, then the 44 Extra Long, and thus never earned a gauge designation. And the gent up there is correct- .410 would be between 68 and 69 gauge. The 9mm rimfire was of Euro origin, and simply began as 9mm.

    MOST shotgun gauges are in even numbers- 2, 4, 8, 10, 12, etc. The one exception that I am aware of was a VERY rare 15 g. made for a very brief period.
     
  7. orangello

    orangello New Member

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    [sure would like to see a bear try to swallow a loaded 4 guage]
     
  8. c3shooter

    c3shooter Administrator Staff Member

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    The pale green/tan shotshell at lower right is an Eley 4 gauge. For scale, that is a .50 cal BMG round next to it. 12 g is about 6 shells to the left.

    Guns Misc 004.jpg
     
  9. 303tom

    303tom Well-Known Member

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    Here is a good comparison..................
     

    Attached Files:

  10. primer1

    primer1 Well-Known Member Supporter

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    Image saved for future reference and comparison. :)
     
  11. potentialglock

    potentialglock New Member

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    I really wanna shoot that 4 gauge now
     
  12. trip286

    trip286 New Member

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    My shoulder can't handle a twelve. And not much with a 20.
    But dammit, I too, will also try a 4.
     
  13. orangello

    orangello New Member

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    Yup, up a bear's bottom.
     
  14. jgoertz

    jgoertz New Member

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    That's a Cajun heart shot for a bear !!!
     
  15. locutus

    locutus Well-Known Member Supporter

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    I want a 1/2 guage!:p
     
  16. potentialglock

    potentialglock New Member

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    Ow! That's huge!
     
  17. mountainman13

    mountainman13 New Member

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    If I remember correctly 12 gauge is 75 caliber.
     
  18. ChicagoJoe

    ChicagoJoe New Member

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    It is called a 12 gauge because 'Bob' was taken.