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DarylSModerator
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Reged: 10/08/05
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Re: big bore barrel source????
      25/11/17 03:05 AM

Should easily use 8 drams, I would expect. If never expecting to shoot past about 50 or 75 yards, less powder could be used.
I'd likely go a bit slower with the 8 bore - maybe 100", and 80" would work for the smaller sizes.

Greener lists 10 drams for the 8 and 10 bores - that's 273.5gr., by the numbers, and 7 drams (191gr.)for the heaviest of 2 loads for the 12.

Of course, the slower the twist, the more shallow the rifling can be & thus, the looser the fit - perhaps. Much depends on the accuracy needed or demanded.

Those charges are all listed a developing 1,600/1,650fps in 10 and 8 bore and 1,760fps in the 12.

My 12 smoothbore made 1,550fps with 191gr. with a (14bore) 482gr. ball, ball not 1,760fps with a 600gr. ball, and that was from a 24" bls.

--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

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Entire topic
Subject Posted by Posted on
* big bore barrel source???? Lane 23/11/17 05:10 AM
. * * Re: big bore barrel source???? Wayne59   23/11/17 07:58 AM
. * * Re: big bore barrel source???? DarylSModerator   23/11/17 09:35 AM
. * * Re: big bore barrel source???? DarylSModerator   23/11/17 09:47 AM
. * * Re: big bore barrel source???? Lane   24/11/17 04:58 PM
. * * Re: big bore barrel source???? Sarg   24/11/17 09:17 PM
. * * Re: big bore barrel source???? Lane   25/11/17 02:20 AM
. * * Re: big bore barrel source???? DarylSModerator   25/11/17 03:05 AM
. * * Re: big bore barrel source???? Lane   25/11/17 03:20 PM
. * * Re: big bore barrel source???? DarylSModerator   26/11/17 04:20 AM
. * * Re: big bore barrel source???? Lane   29/11/17 09:02 AM
. * * Re: big bore barrel source???? 500Boswell   29/11/17 03:41 PM
. * * Re: big bore barrel source???? DarylSModerator   29/11/17 05:13 PM
. * * Re: big bore barrel source???? Lane   30/11/17 06:11 AM
. * * Re: big bore barrel source???? CowboyCS   30/11/17 04:46 PM
. * * Re: big bore barrel source???? TH44   01/12/17 10:00 AM
. * * Re: big bore barrel source???? Lane   02/12/17 05:06 AM
. * * Re: big bore barrel source???? TH44   03/12/17 02:09 AM
. * * Re: big bore barrel source???? TH44   03/12/17 02:24 AM
. * * Re: big bore barrel source???? 93x64mm   03/12/17 08:46 AM
. * * Re: big bore barrel source???? Lane   03/12/17 05:25 PM
. * * Re: big bore barrel source???? CowboyCS   04/12/17 02:48 AM
. * * Re: big bore barrel source???? Lane   07/12/17 06:18 AM
. * * Re: big bore barrel source???? TH44   02/12/17 12:15 PM
. * * Re: big bore barrel source???? 500Boswell   02/12/17 04:06 PM
. * * Re: big bore barrel source???? CowboyCS   02/12/17 07:35 AM

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