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bore/groove diameter
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vapodog
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can anyone tell me the bore and groove diameter of a 20 ga slug barrel?


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Posts: 28849 | Location: western Nebraska | Registered: 27 May 2003Reply With Quote
dpcd
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.615, +.020 is the SAAMI bore diameter. Which has nothing to do with rifled barrels.
I would ask the maker as, as you can see, the tolerance is quite generous for shotgun barrels.
 
Posts: 17184 | Location: USA | Registered: 02 August 2009Reply With Quote
vapodog
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I would ask the maker

Thanks for the reply.....I'll see if I can get the data from Mossberg or someone else.


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"Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery."
Winston Churchill
 
Posts: 28849 | Location: western Nebraska | Registered: 27 May 2003Reply With Quote
The Dane
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Posts: 1102 | Location: Denmark | Registered: 15 October 2001Reply With Quote
dpcd
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This chart gives no tolerances and is not for rifled barrels. Nice chart otherwise.
Ask the barrel maker as SAAMI does not spec rifled shotgun barrels.
 
Posts: 17184 | Location: USA | Registered: 02 August 2009Reply With Quote
h2oboy
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I will have to verify this but I believe .613 bore and .620 groove is what mine are.


Dirk Schimmel
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Posts: 495 | Location: Gillette,Wyoming | Registered: 16 May 2007Reply With Quote
h2oboy
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Ok, I have one set that is .613 bore and .620 groove. The second set is .615 bore and .624 groove. Both sets are 1-24 twist.


Dirk Schimmel
D Schimmel LLC
Dirk@DoubleRifles.Us
1-307-257-9447

Double rifles make Africa safe enough for bolt guns!
 
Posts: 495 | Location: Gillette,Wyoming | Registered: 16 May 2007Reply With Quote
vapodog
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Originally posted by h2oboy:
Ok, I have one set that is .613 bore and .620 groove. The second set is .615 bore and .624 groove. Both sets are 1-24 twist.


thank you


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Posts: 28849 | Location: western Nebraska | Registered: 27 May 2003Reply With Quote
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