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Double Rifles, Single Shots & Combinations >> Building Double Rifles & Gunsmithing

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Rothhammer1
.375 member


Reged: 06/01/17
Posts: 795
Loc: The Redwoods of California
Re: Simson .405 Winchester [Re: MotelAlpha]
      #315106 - 09/04/18 12:55 AM

Quote:

I'll have to figure out how to post an image properly...getting old and don't fool around much with things on the computer.... worst case is I think I can take a picture on my cell phone and then send it to you. Let me know




How to post photos.

Click on the link below and read the posts on that thread. Any images stored on your computer can be easily posted on this forum by following those directions.

Post photos



--------------------
Citizen of the Cherokee Nation


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crshelton
.300 member


Reged: 10/11/15
Posts: 100
Loc: Republic of Texas
Re: Simson .405 Winchester [Re: Rothhammer1]
      #318019 - 14/07/18 05:04 AM

Update to original Simson .405 post: Engraved Stock oval added:



A good match with the coin finish receiver:





--------------------
CRS,NRA Benefactor Member, TSRA, DRSS, DWWC, Whittington Center
Android Ballistics App at http://www.xplat.net/

Edited by crshelton (15/07/18 12:22 PM)


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rigbymauser
.400 member


Reged: 15/05/05
Posts: 1548
Loc: Denmark
Re: Simson .405 Winchester [Re: crshelton]
      #318085 - 15/07/18 02:29 AM

Quote:

Rigby,
You mentioned my 1886 .45-90. May I ask how you knew I have one?




We have corrosponded on AR a few times. My name there is 'jens poulsen'.

Thanks for sharing all the pictures of your .405cal double. A danish member here named 'Leo' owns a nice .405cal double made by a Hamborg gunmaker. Using Hornady factory ammo we have measured the velocity to 730 m/sec which is a bit stiff but regulates well. The .405win is a pigbuster and everythingelsebuster..lol.


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rigbymauser
.400 member


Reged: 15/05/05
Posts: 1548
Loc: Denmark
Re: Simson .405 Winchester [Re: rigbymauser]
      #318086 - 15/07/18 02:31 AM

...beautilful rifle. Lovely piece to carry and to own.

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OahuKaneohe
.275 member


Reged: 03/12/08
Posts: 72
Loc: Hawaii, Oahu, Kaneohe
Re: Simson .405 Winchester [Re: rigbymauser]
      #318088 - 15/07/18 05:28 AM

I have posted pics of my 1925 Joseph Manton .405 double in the Archives section. Here:

http://forums.nitroexpress.com/showflat.php?Cat=0&Number=260519&Main=260336#Post260519


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rigbymauser
.400 member


Reged: 15/05/05
Posts: 1548
Loc: Denmark
Re: Simson .405 Winchester [Re: OahuKaneohe]
      #318089 - 15/07/18 05:44 AM

http://forums.nitroexpress.com/showflat.php?Cat=0&Number=220213&an=0&page=0

Another nice .405 cal double with danish ownership...


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crshelton
.300 member


Reged: 10/11/15
Posts: 100
Loc: Republic of Texas
Re: Simson .405 Winchester [Re: rigbymauser]
      #318091 - 15/07/18 06:33 AM

As Jens, you have a tag line that always makes me smile - the hunter on the toilet mistaken for a moose.
Moose and bear are on the bucket list for my .405 double; my 1895 .405 has already taken big buff (Cape and water).

--------------------
CRS,NRA Benefactor Member, TSRA, DRSS, DWWC, Whittington Center
Android Ballistics App at http://www.xplat.net/


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crshelton
.300 member


Reged: 10/11/15
Posts: 100
Loc: Republic of Texas
Re: Simson .405 Winchester [Re: crshelton]
      #318094 - 15/07/18 12:20 PM

"Using Hornady factory ammo we have measured the velocity to 730 m/sec "

mm, by my calculations, that would be 2395 fps. Please correct me if I mis calculated.

Hornady claims 2225 fps for their 300 grain .405 ammo. My chronograph tests show Hornady Factory 300 grain ammo at 2225 to 2250 fps. I keep my 300 grain hand loads in that range so as to shoot to the same point of aim as factory Hornady. My .405 double was regulated with Hornady factory 300 grain ammo.

In all my load research, 2400 fps for 300 grain .405 bullets is as fast as has been loaded and reported.

--------------------
CRS,NRA Benefactor Member, TSRA, DRSS, DWWC, Whittington Center
Android Ballistics App at http://www.xplat.net/


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rigbymauser
.400 member


Reged: 15/05/05
Posts: 1548
Loc: Denmark
Re: Simson .405 Winchester [Re: crshelton]
      #318099 - 15/07/18 06:11 PM

Quote:

"Using Hornady factory ammo we have measured the velocity to 730 m/sec "

mm, by my calculations, that would be 2395 fps. Please correct me if I mis calculated.

Hornady claims 2225 fps for their 300 grain .405 ammo. My chronograph tests show Hornady Factory 300 grain ammo at 2225 to 2250 fps. I keep my 300 grain hand loads in that range so as to shoot to the same point of aim as factory Hornady. My .405 double was regulated with Hornady factory 300 grain ammo.

In all my load research, 2400 fps for 300 grain .405 bullets is as fast as has been loaded and reported.




I know the owner of the .405win we chronographed. I will Contact him to post. It was me who shot through the chronograph. We used that Hornady ammo with Theodore Rosevelt on it. I knew when I saw the numbers they were high. Too high for my liking even for in an interwar period doublerifle of a german make. Had been 670-690 m/sec it would have been good.

Your calculation are right on!.


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