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09-08-2021, 03:12 PM | #3 | ||||||
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I believe those are choke diameter measurements in millimeters. For instance, 18.2 millimeters is the english equivalent of .716 inch, hence would be a constriction of .13 inches, assuming a standard 12 bore diameter of .729 inches
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"Striving to become the man my dog thinks I am" |
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09-08-2021, 11:05 PM | #4 | ||||||
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Thanks guys! I figured they were mm measurements. I'm still confused on how to determine the choke with the numbers though. Is the 18.2 indicating the bore diameter and the other number the choke measurement? If so, the bore is .7165" rather than .729". If 18.2 is not the bore, then what is it? Which number is referencing the choke when each barrel has 2 numbers stamped on it?
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09-08-2021, 11:32 PM | #5 | ||||||
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Bob is correct. The larger number is the bore. The smaller number is the constriction. Yes, not your standard .729 for 12 gauge.
Excellent choke combination. |
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The Following User Says Thank You to Jerry Harlow For Your Post: |
09-08-2021, 11:56 PM | #6 | ||||||
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OK, cool. Thanks guys! I'm glad to learn something.
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09-09-2021, 12:39 AM | #7 | ||||||
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Would these slightly narrower bores lead to higher pressures, maybe a little more velocity, and tighter patterns (compared to the same constriction differences on a .729" bore)?
Not that it matters a whole lot. Just curious. |
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09-09-2021, 09:29 PM | #8 | ||||||
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I doubt it. The modern shotgun wads have a hollow base and petals that expands to the bore size, just as the great invention of the minie ball did for muskets.
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