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

DarylS
.700 member

Reged: 10/08/05
Posts: 27214
Loc: Beautiful British Columbia, Ca...

Re: Army navy 12 bore SXS
09/01/25 04:58 AM

Water dropping the alloys from the mould will make them too hard. It takes about 12 hours for maximum hardness to be reached, then over time of years, they will slowly soften back to the original WW alloy's brinel.
Due to the slightly differing temperatures when they hit the water, the brinel reached will normally be from about brinel 25 to 32 or 33 max.
This is way too hard.
The trick is going to be to use a bullet soft enough to obturate, but hard enough to 'take' the rifling.
I would suggest a mix of 50:50, pure lead and your WW alloy to get a brinel around 8.
This alloy worked VERY well in my .50 Alaskan with 550gr. bullets. They were very accurate and "took" the 24" ROT very well.
Straight WW alloy is likely too hard to obturate.
This would suggest an even softer alloy, likely to pure lead would also work in your 12 bore.
Paper cases might be too thick in the 'neck'.
Most compression formed plastic cases are VERY thin in the neck. The cheaper plastics, are thicker.

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

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

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Subject	Posted by	Posted on
Army navy 12 bore SXS	Longknife	04/01/25 07:48 AM
Re: Army navy 12 bore SXS	DarylS	04/01/25 08:29 AM
Re: Army navy 12 bore SXS	fjrdoc	04/01/25 10:31 AM
Re: Army navy 12 bore SXS	lancaster	05/01/25 01:20 AM
Re: Army navy 12 bore SXS	Huvius	05/01/25 03:21 AM
Re: Army navy 12 bore SXS	85lc	05/01/25 05:38 AM
Re: Army navy 12 bore SXS	DarylS	05/01/25 07:06 AM
Re: Army navy 12 bore SXS	NitroX	05/01/25 06:36 PM
Re: Army navy 12 bore SXS	DarylS	06/01/25 05:34 AM
Re: Army navy 12 bore SXS	CM76	06/01/25 12:50 PM
Re: Army navy 12 bore SXS	Longknife	07/01/25 10:26 AM
Re: Army navy 12 bore SXS	3DogMike	08/01/25 12:09 AM
Re: Army navy 12 bore SXS	DarylS	08/01/25 05:56 AM
Re: Army navy 12 bore SXS	93x64mm	08/01/25 10:01 PM
Re: Army navy 12 bore SXS	Longknife	09/01/25 03:54 AM
Re: Army navy 12 bore SXS	DarylS	09/01/25 04:58 AM
Re: Army navy 12 bore SXS	degoins	09/01/25 01:08 PM

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