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Double Rifles, Single Shots & Combinations >> Paradox and Bore Guns

DarylS
.700 member

Reged: 10/08/05
Posts: 26854
Loc: Beautiful British Columbia, Ca...

Re: Want to make 12 or 20 gauge round ball gun
23/06/16 02:22 AM

SR4756 is the slower of the two, thus will allow higher velocities. Blue Dot is also a prime powder for these sorts of loads.

The Lyman shotshell loading manuals have excellent data near the back for slug and round ball loads, 12 or 20 gauge.

SR4756 and Blue Dot are usually close, with Blue Dot generally only a few fps faster. 4756 strikes me as being more forgiving with lighter loads - easier ignition.

12- Fed Gold Medal Cases, 4756 will break 1,600fps with 475gr. Lyman cast Fosters. With their 525gr. "Pellet" slug, 1,500fps is it- faster with the even slower powders.

In 20 bore, Blue Dot is ahead by more, however 4756 does a good job, even if it is 100fps+ slower most of the time.
For example, 350gr. Lyman sabot slug, 4756 at 1,436fps and Blue Dot at 1,596fps using Fed paper base wad, but with Fiocchi all plastic cases, 4756 makes 1,623 with the 350gr. and Blue Dot isn't listed.

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

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

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Subject	Posted by	Posted on
Want to make 12 or 20 gauge round ball gun	zgunbear	07/04/16 11:48 PM
Re: Want to make 12 or 20 gauge round ball gun	DarylS	08/04/16 03:58 AM
Re: Want to make 12 or 20 gauge round ball gun	zgunbear	08/04/16 04:16 AM
Re: Want to make 12 or 20 gauge round ball gun	DarylS	08/04/16 06:55 AM
Re: Want to make 12 or 20 gauge round ball gun	zgunbear	11/04/16 12:36 PM
Re: Want to make 12 or 20 gauge round ball gun	sharps4590	11/04/16 08:33 PM
Re: Want to make 12 or 20 gauge round ball gun	zgunbear	11/04/16 10:42 PM
Re: Want to make 12 or 20 gauge round ball gun	DarylS	12/04/16 02:46 AM
Re: Want to make 12 or 20 gauge round ball gun	sharps4590	12/04/16 05:27 AM
Re: Want to make 12 or 20 gauge round ball gun	zgunbear	24/04/16 12:44 PM
Re: Want to make 12 or 20 gauge round ball gun	zgunbear	02/05/16 01:34 PM
Re: Want to make 12 or 20 gauge round ball gun	DarylS	02/05/16 11:42 PM
Re: Want to make 12 or 20 gauge round ball gun	zgunbear	03/05/16 10:07 AM
Re: Want to make 12 or 20 gauge round ball gun	ducmarc	06/05/16 12:02 PM
Re: Want to make 12 or 20 gauge round ball gun	zgunbear	13/05/16 12:04 PM
Re: Want to make 12 or 20 gauge round ball gun	DarylS	13/05/16 01:49 PM
Re: Want to make 12 or 20 gauge round ball gun	zgunbear	17/05/16 12:38 PM
Re: Want to make 12 or 20 gauge round ball gun	DarylS	18/05/16 01:07 AM
Re: Want to make 12 or 20 gauge round ball gun	ducmarc	19/05/16 10:55 AM
Re: Want to make 12 or 20 gauge round ball gun	zgunbear	19/05/16 01:16 PM
Re: Want to make 12 or 20 gauge round ball gun	DarylS	20/05/16 01:53 AM
Re: Want to make 12 or 20 gauge round ball gun	ducmarc	29/05/16 12:01 PM
Re: Want to make 12 or 20 gauge round ball gun	zgunbear	14/06/16 12:24 PM
Re: Want to make 12 or 20 gauge round ball gun	Wayne59	15/06/16 07:03 AM
Re: Want to make 12 or 20 gauge round ball gun	zgunbear	15/06/16 10:53 AM
Re: Want to make 12 or 20 gauge round ball gun	Wayne59	15/06/16 12:09 PM
Re: Want to make 12 or 20 gauge round ball gun	zgunbear	21/06/16 12:59 PM
Re: Want to make 12 or 20 gauge round ball gun	DarylS	22/06/16 02:09 AM
Re: Want to make 12 or 20 gauge round ball gun	zgunbear	22/06/16 12:23 PM
Re: Want to make 12 or 20 gauge round ball gun	DarylS	23/06/16 02:22 AM
Re: Want to make 12 or 20 gauge round ball gun	zgunbear	14/09/16 12:41 PM
Re: Want to make 12 or 20 gauge round ball gun	DarylS	14/09/16 04:41 PM
Re: Want to make 12 or 20 gauge round ball gun	zgunbear	14/09/16 10:10 PM
Re: Want to make 12 or 20 gauge round ball gun	DarylS	15/09/16 12:57 AM

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