Forums.NitroExpress.com

Home | Ezine | Forums | Links | Contact NitroExpress.com: homemade doubles

View recent messages : 24 hours | 48 hours | 7 days | 14 days | 30 days | 60 days | More Smilies

*** Enjoy NitroExpress.com? Participate and join in. ***

You are not logged in. [Login]

Main Index · Search · Active Topics
New user · Who's Online · FAQ · Calendar

Double Rifles, Single Shots & Combinations >> Double Rifles

4seventy
Sponsor

Reged: 07/05/03
Posts: 2210
Loc: Queensland Australia

Re: homemade doubles
22/06/05 07:51 PM

For anyone thinking about building a double on a shotgun action here are a few things to think about.

For a cartridge like the 375 flanged magnum, chamber pressures could be in the region of 50,000 psi or higher.
If a proof load is used at plus 30 percent this will mean that the chamber pressure could be around 70,000 psi for the proving load.
That's seventy thousand pounds per square inch.

I think it unwise and unsafe to calculate any monoblok to barrel join shear rating at 100 percent.
To do so assumes that the solder join is 100 percent perfect and as the join is hidden from view an assumption is all you have, there is no visual proof.

Shear strength should be calculated, but when dealing with a cartridge being fired in a barrel chamber there are other important stresses on the barrel to monoblok join which need to be considered.

Back thrust / axial force is directly related to pressure and is directly proportional to it.

While axial force needs to be factored in to the safety calculations, so does chamber pressure as both can affect the ability of the soldered joint to withstand the loads and stresses it must endure.

Chamber pressure alone (in home built doubles) can in some situations degrade the solder join when a soft solder is used between barrel and monobloc.

The bottom line is that you may never get any warning that the join is weak or has weakened.
IMO this is a risk far to high to accept.

Are there are any manufacturers who build double rifles on the monobloc system using shotgun actions and who rely on nothing more than tin/lead solder to hold the barrels into the monobloc?

More later........

Post Extras

Print Post

Remind Me!

Notify Moderator

Entire topic
Subject	Posted by	Posted on
homemade doubles	CMWill	01/06/05 12:59 PM
Re: homemade doubles	Ron_Vella	02/06/05 10:50 AM
Re: homemade doubles	CMWill	02/06/05 11:51 AM
Re: homemade doubles	doublegunfan	03/06/05 01:01 AM
Re: homemade doubles	CMWill	03/06/05 12:10 PM
Re: homemade doubles	4seventy	03/06/05 07:56 PM
Re: homemade doubles	CMWill	04/06/05 09:37 AM
Re: homemade doubles	4seventy	04/06/05 05:19 PM
Re: homemade doubles	CMWill	05/06/05 07:25 AM
Re: homemade doubles	Ron_Vella	05/06/05 08:18 AM
Re: homemade doubles	CMWill	05/06/05 01:08 PM
Re: homemade doubles	Marrakai	06/06/05 11:42 AM
Re: homemade doubles	CMWill	06/06/05 12:37 PM
Re: homemade doubles	balltip	12/06/05 04:07 AM
Re: homemade doubles	4seventy	13/06/05 05:19 PM
Re: homemade doubles	balltip	14/06/05 12:00 AM
Re: homemade doubles	Marrakai	13/06/05 10:26 PM
Re: homemade doubles	Bloodnativ	13/06/05 10:00 AM
Re: homemade doubles	new_guy	13/06/05 11:03 PM
Re: homemade doubles	Bloodnativ	14/06/05 02:53 AM
Re: homemade doubles	Ron_Vella	14/06/05 07:11 AM
Re: homemade doubles	4seventy	14/06/05 06:23 PM
Re: homemade doubles	Ron_Vella	14/06/05 10:46 PM
Re: homemade doubles	4seventy	16/06/05 03:57 PM
Re: homemade doubles	Bloodnativ	16/06/05 05:03 PM
Re: homemade doubles	4seventy	16/06/05 08:46 PM
Re: homemade doubles	Bloodnativ	17/06/05 12:15 AM
Re: homemade doubles	Ron_Vella	17/06/05 08:44 AM
Re: homemade doubles	ALAN_MCKENZIE	17/06/05 10:08 PM
Re: homemade doubles	deant	18/06/05 01:01 AM
Re: homemade doubles	NitroX	18/06/05 04:22 PM
Re: homemade doubles	4seventy	18/06/05 09:04 PM
Re: homemade doubles	ALAN_MCKENZIE	18/06/05 09:34 PM
Re: homemade doubles	NitroX	19/06/05 02:10 AM
Re: homemade doubles	deant	20/06/05 08:55 PM
Re: homemade doubles	NitroX	20/06/05 11:33 PM
Re: homemade doubles	mickey	21/06/05 04:25 AM
Re: homemade doubles	NitroX	21/06/05 01:02 PM
Re: homemade doubles	500Nitro	22/06/05 08:10 AM
Re: homemade doubles	NitroX	22/06/05 12:33 PM
Re: homemade doubles	4seventy	22/06/05 07:51 PM
Re: homemade doubles	4seventy	27/06/05 04:41 PM
Re: homemade doubles	unspellable	22/06/05 10:37 PM
Re: homemade doubles	4seventy	23/06/05 07:44 PM
Re: homemade doubles	CptCurl	23/06/05 10:05 PM
Re: homemade doubles	4seventy	26/06/05 11:26 AM
Re: homemade doubles	CptCurl	23/06/05 10:03 PM
Re: homemade doubles	CptCurl	23/06/05 12:42 AM
Re: homemade doubles	4seventy	23/06/05 05:12 PM
Re: homemade doubles	balltip	22/06/05 07:27 AM
Re: homemade doubles	CptCurl	21/06/05 01:34 PM
Re: soldering the monobloc	unspellable	21/06/05 01:10 AM
Re: homemade doubles	4seventy	17/06/05 08:55 PM
Re: homemade doubles	Marrakai	17/06/05 11:14 AM
Re: homemade doubles	Bloodnativ	17/06/05 03:42 PM
Re: homemade doubles	4seventy	15/06/05 09:16 PM
Re: homemade doubles	Marrakai	15/06/05 10:47 PM
Re: homemade doubles	Ron_Vella	16/06/05 06:57 AM
Re: homemade doubles	Marrakai	14/06/05 10:31 AM
Re: homemade doubles	Ron_Vella	14/06/05 10:51 AM
Re: homemade doubles	mickey	13/06/05 12:21 PM
Re: homemade doubles	Bloodnativ	13/06/05 01:28 PM
Re: homemade doubles	NitroX	03/06/05 01:17 AM
Re: homemade doubles	unspellable	03/06/05 03:43 AM
Re: homemade doubles	Ron_Vella	02/06/05 08:28 PM

Extra information

1 registered and 81 anonymous users are browsing this forum.

Moderator: CptCurl

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:

Thread views: 19365

You rated this thread a 2.

Jump to

NitroExpress.com

Powered by UBB.threads™ 6.5.5

Home | Ezine | Forums | Links | Contact

Copyright 2003 to 2011 - all rights reserved