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An interesting coincidence...

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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An interesting coincidence...

Unread postAuthor: D_Hall » Wed Nov 25, 2009 11:52 am

20 gauge shotgun, nominal bore: 0.615"

seamless 3/4" pipe, schedule 160, nominal bore: 0.614"

I'm thinking that sabots/slugs intended for the 20 gauge handloader community + 3/4" sch 160 pipe = interesting combination for those who like playing with high pressures.
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Unread postAuthor: CpTn_lAw » Wed Nov 25, 2009 12:00 pm

You're talking steel pipe right?
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Unread postAuthor: D_Hall » Wed Nov 25, 2009 12:07 pm

CpTn_lAw wrote:You're talking steel pipe right?

Yes, however dimensions of 3/4" sch 160 pipe will be the same for steel, stainless steel, or aluminum.

I doubt there is such a thing as sch 160 PVC, but I will say this: If you ever see a post from me that suggests a building material you can safely assume I am NOT talking about PVC. The use of PVC pipe is the one aspect of this website that I can never endorse.
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Unread postAuthor: john bunsenburner » Wed Nov 25, 2009 12:17 pm

mazeltov to that D_hall...sounds like a fun project...now i need a european equivalent.
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Re: An interesting coincidence...

Unread postAuthor: dewey-1 » Wed Nov 25, 2009 12:32 pm

D_Hall wrote:20 gauge shotgun, nominal bore: 0.615"

seamless 3/4" pipe, schedule 160, nominal bore: 0.614"

I'm thinking that sabots/slugs intended for the 20 gauge handloader community + 3/4" sch 160 pipe = interesting combination for those who like playing with high pressures.


A 16ga shotgun shell will fit 3/4" Copper Type M with minimal trimming of .815" OD for ring. 3/4" Type M is .811" ID nom.

Here is a good link for shotgun shell dimensions;

http://www.dave-cushman.net/shot/shotshellloads.html
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Unread postAuthor: jrrdw » Wed Nov 25, 2009 12:58 pm

When these barrels are tapered how can they be gaged by "sch"? The breech's are all ways (to my knowledge) thicker then the muzzle's.
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Unread postAuthor: D_Hall » Wed Nov 25, 2009 1:11 pm

jrrdw wrote:When these barrels are tapered how can they be gaged by "sch"? The breech's are all ways (to my knowledge) thicker then the muzzle's.

Shotgun barrels are tapered at the breech and the muzzle (OK, the muzzle isn't always tapered, but usually it is). In the "middle" of the barrel, they are cylindrical. That's the nominal dimension.
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