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SB Trap Bore and Choke Questions
Unread 11-13-2020, 08:32 AM   #1
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Scott Smith
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Default SB Trap Bore and Choke Questions

I have a SBT with a .737 bore and choke of .030 (light full).

Did Parker overbore some of their SBTs?

It would be interesting to know what others have in terms of bore and choke measurements.
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Unread 11-13-2020, 08:44 AM   #2
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Parker did overbore some singles, some as big as .740.
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Unread 11-19-2020, 09:24 AM   #3
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Quote:
Originally Posted by Scott Smith View Post
I have a SBT with a .737 bore and choke of .030 (light full).

Did Parker overbore some of their SBTs?

It would be interesting to know what others have in terms of bore and choke measurements.
Most overbore in shotgun barrels is called Honing Harry
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Unread 11-19-2020, 09:27 AM   #4
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Quote:
Originally Posted by Scott Smith View Post
I have a SBT with a .737 bore and choke of .030 (light full).

Did Parker overbore some of their SBTs?

It would be interesting to know what others have in terms of bore and choke measurements.
Most overbore in shotgun barrels is called Honing . Harry
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Unread 11-19-2020, 10:02 AM   #5
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ALL Parker bores were honed after boring at the factory.





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Overbore
Unread 11-19-2020, 10:05 AM   #6
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Default Overbore

Most, but not all. That's the reason for the question.
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Unread 11-19-2020, 10:34 AM   #7
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Quote:
Originally Posted by harry gietler View Post
Most overbore in shotgun barrels is called Honing . Harry
No entirely correct.
Plenty of Parker guns were overbored when built. Especially prior to 1900, I have measured some 12g. barrels with bore diameter creeping up into the 10g. range and the barrels were completely original. On the Super Fox overboring was one of the keys to its long range performance.

But yes, bores can be honed out after the fact to clean up pitting or damage, which can increase the bore diameter slightly. But just because a bore is oversized, does not mean that it must have been messed with after the fact.
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Unread 11-19-2020, 01:05 PM   #8
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My 1918 SC and 1934 SC both had standard bores with .040" choke constrictions
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Unread 11-19-2020, 02:42 PM   #9
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Quote:
Originally Posted by Scott Smith View Post
I have a SBT with a .737 bore and choke of .030 (light full).

Did Parker overbore some of their SBTs?

It would be interesting to know what others have in terms of bore and choke measurements.
The question is Did Parker overbore SBT gun barrels? They may have honed them at the factory as per customers wants or later on known as after market! Harry
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Overbore
Unread 11-19-2020, 04:01 PM   #10
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Default Overbore

Thank you Drew. That is the kind of information I was looking for. Actual bore measurements of SBTs to try to understand how many might be overbored.

Just trying to understand if it might have been something Parker did as a standard offering.

And thank you Harry for stating the obvious.
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