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Shooting & Reloading - Mausers, Big Bores and others >> Shotguns
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Marrakai
.416 member


Reged: 09/01/03
Posts: 3726
Loc: Darwin, Top End of Australia
Re: Inside size of 12 gage shotgun shell
      13/12/14 04:24 PM

More important to match the slug to your bore or rifling grooves, depending on what you are actually building. The loaded cartridge then has to be a drop-in fit to the chamber.

Most people say its best to get a mold to cast slightly oversize and push through a sizing die for uniform dia and concentricity.
Plastic shot-shell hulls are flexible and should take a .730 slug no worries, without sticking in a normal 12-bore chamber. I load .735 slugs routinely for a nitro paradox. I even made a hand-tool to flare the case-mouth slightly to make them easier to seat in the hull. Still roll-crimps onto the Fosbery shoulder just fine.

--------------------
Marrakai
When the bull drops, the bullshit stops!
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www.marrakai-adventure.com.au

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Subject Posted by Posted on
* Inside size of 12 gage shotgun shell TomN 13/12/14 02:31 PM
. * * Re: Inside size of 12 gage shotgun shell Marrakai   13/12/14 04:24 PM
. * * Re: Inside size of 12 gage shotgun shell DarylS   14/12/14 05:24 AM

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