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DarylS
.700 member

Reged: 10/08/05
Posts: 27636
Loc: Beautiful British Columbia, Ca...

Re: Mystery double in mystery caliber
05/04/25 10:22 AM

Were they .40/90 bottle necked?
Would have been on the .45 case, so close to .500 or so.
Just remembered - there is another way of putting the brass tubing over an undersized base with close to the correct rim diameter.
The brass tubing I am talking about, is the material available at (here) model airplane hobby stores. It comes in sizes from very tiny, to 1", in .015" steps. Each successive size, slides into the size .015 smaller. So - all have a .015 wall and they are always within .0075" of being the correct size.
Silver bearing soft solder works.
.015 x 2 + .030" total over case base diameter.
If .487 is needed, then perhaps a .405 Winchester case could be used with a sleeve. A .405 Winchester case at .460", + .030" is perfectly capable of beind sized or trimmed to .487".

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

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

Post Extras

Entire topic
Subject	Posted by	Posted on
Mystery double in mystery caliber	Igorrock	09/02/25 05:46 AM
Re: Mystery double in mystery caliber	NitroX	10/02/25 01:16 AM
Re: Mystery double in mystery caliber	Huvius	10/02/25 05:37 AM
Re: Mystery double in mystery caliber	NitroX	10/02/25 08:04 PM
Re: Mystery double in mystery caliber	Huvius	11/02/25 02:41 PM
Re: Mystery double in mystery caliber	lancaster	11/02/25 04:40 PM
Re: Mystery double in mystery caliber	Igorrock	11/02/25 08:07 PM
Re: Mystery double in mystery caliber	lancaster	11/02/25 08:59 PM
Re: Mystery double in mystery caliber	DarylS	12/02/25 05:23 AM
Re: Mystery double in mystery caliber	Igorrock	04/04/25 07:16 AM
Re: Mystery double in mystery caliber	DarylS	04/04/25 08:54 AM
Re: Mystery double in mystery caliber	85lc	04/04/25 01:48 PM
Re: Mystery double in mystery caliber	DarylS	05/04/25 03:01 AM
Re: Mystery double in mystery caliber	Igorrock	05/04/25 05:32 AM
Re: Mystery double in mystery caliber	DarylS	05/04/25 08:53 AM
Re: Mystery double in mystery caliber	85lc	05/04/25 09:10 AM
Re: Mystery double in mystery caliber	DarylS	05/04/25 10:22 AM
Re: Mystery double in mystery caliber	85lc	05/04/25 11:06 AM
Re: Mystery double in mystery caliber	DarylS	05/04/25 12:05 PM
Re: Mystery double in mystery caliber	Igorrock	05/04/25 03:50 PM
Re: Mystery double in mystery caliber	lancaster	05/04/25 05:03 PM
Re: Mystery double in mystery caliber	Igorrock	06/04/25 12:19 AM
Re: Mystery double in mystery caliber	lancaster	06/04/25 02:01 AM
Re: Mystery double in mystery caliber	Igorrock	06/04/25 04:29 AM
Re: Mystery double in mystery caliber	Igorrock	11/02/25 07:08 AM
Re: Mystery double in mystery caliber	93x64mm	09/02/25 06:37 AM
Re: Mystery double in mystery caliber	Huvius	09/02/25 07:44 AM
Re: Mystery double in mystery caliber	lancaster	09/02/25 09:05 PM
Re: Mystery double in mystery caliber	Igorrock	09/02/25 09:28 PM
Re: Mystery double in mystery caliber	lancaster	09/02/25 09:41 PM

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