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Old 10-26-2012, 04:57 PM   #1
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Default Why is 12 guage calld a 12 guage?

And a 20 calld a 20?



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Old 10-26-2012, 05:34 PM   #2
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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.



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Old 10-26-2012, 06:29 PM   #3
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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.

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Old 10-26-2012, 06:59 PM   #4
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Quote:
Originally Posted by potentialglock View Post
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.
.410 is 68 or 69 gauge I think.........
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Old 10-26-2012, 07:13 PM   #5
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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.

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Old 10-26-2012, 08:05 PM   #6
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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.

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Old 10-26-2012, 08:07 PM   #7
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[sure would like to see a bear try to swallow a loaded 4 guage]

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Old 10-27-2012, 12:05 AM   #8
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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.

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Old 10-27-2012, 04:59 AM   #9
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Here is a good comparison..................



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Old 10-27-2012, 03:27 PM   #10
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Quote:
Originally Posted by 303tom
Here is a good comparison..................
Image saved for future reference and comparison.


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