Forums.NitroExpress.com

Home | Ezine | Forums | Links | Contact NitroExpress.com: Sauer DR Project

*** 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 >> Building Double Rifles & Gunsmithing

Pages: 1 | 2 | (show all)

mehulkamdar
.416 member

Reged: 09/01/04
Posts: 3688
Loc: State of Ill-Annoy USA.

Re: Sauer DR Project [Re: Metalguy]
#146799 - 27/11/09 12:59 PM

Posting pics for Metalguy:

Good hunting, everyone!

--------------------
The Ark was made by amateurs. Experts built the Titanic.

Mehul Kamdar

Edited by CptCurl (28/11/09 12:16 AM)

Post Extras:

Bramble
.375 member

Reged: 29/07/06
Posts: 950
Loc: England

Re: Sauer DR Project [Re: mehulkamdar]
#146858 - 28/11/09 12:01 PM

Good heavens, I just re-read my reply , sorry chaps it was very late at night and I did not spell check it,. What terrible English,
It should have read...

Metalguy

It is not the pressure per se that is the important factor. You need to know the MAP for the two cartridges and the base diameter that the pressure works on in the two cases.

so R1xR1xPyexMAP=breach thrust.

Now you need to compare that to the thrust for 12 gauge cartridge that was the original chambering.

What you need to bear in mind is that the action is going to try and bend around the root where the standing breach meets the watertable.

If you want to do the calcs properly one should also consider the moment of the force as a smaller diameter acts lower down the standing breach and reduces the force acting on the root.

The hoop pressure i.e. 47,000 v 42,000 is relatively unimportant as the barrels steel (if the gun is properly assembled will happily take twice that pressure.

Post Extras:

Metalguy
.300 member

Reged: 25/10/09
Posts: 152
Loc: Northern WY

Re: Sauer DR Project [Re: Bramble]
#146862 - 28/11/09 01:50 PM

Of the three calibers I am looking at, here are the standing breech pressures for each....

9.3 x 74r: 8,823 lbs.

405 Winchester: 7,392 lbs.

.375 jdj: 10,904 lbs. (yeoouch!)

I'm really hoping to go with the 9.3 x 74r, but I'm curious about anybody's thoughts.

Post Extras:

mehulkamdar
.416 member

Reged: 09/01/04
Posts: 3688
Loc: State of Ill-Annoy USA.

Re: Sauer DR Project [Re: Metalguy]
#147317 - 06/12/09 11:14 AM

More pictures of Metalguy's gun - again with apologies for the delay on my side:

Good hunting everyone!

--------------------
The Ark was made by amateurs. Experts built the Titanic.

Mehul Kamdar

Post Extras:

Metalguy
.300 member

Reged: 25/10/09
Posts: 152
Loc: Northern WY

Re: Sauer DR Project [Re: AkMike]
#149757 - 07/01/10 05:10 PM

I finally decide on the 9.3 x 74r for my caliber. It seems the most versatile for my needs, and it got the cool factor going for it. I royally screwed up though here recently and strolled in a pawn shop and walked out with a Model 28 Smith & Wesson (damn my addiction).

So, my build will now be delayed a month or two while I regain my cash. I am curious though if anyone know the point at which you bush the firing pins? Or, do you just do it and what's the proper diameter? Thanks

Post Extras:

Pages: 1 | 2 | (show all)

Extra information

0 registered and 39 anonymous users are browsing this forum.

Moderator: CptCurl

Print Topic

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

Rating:
Topic views: 1213

Jump to

NitroExpress.com

Home | Ezine | Forums | Links | Contact