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Rothhammer1
.400 member

Reged: 06/01/17
Posts: 1826
Loc: The Redwoods of California

Re: Forming 9.5 x 57 brass...
13/01/17 05:43 PM

Use .35 Whelen cases to make your 9.5X57 MS brass.

Hello, all.

I have had no trouble at all forming 9.5X57 (.375 Nitro Express Rimless) from fresh .35 Whelen cases given a single pass through an RCBS two die set.

The neck of .35 being much closer to .375 than several of the others makes it a smooth operation.

Form them full length, then cut and trim to the proper size. Fill with Hornady 3715 (270 g. RN) if you can find them. Be sure to seat to the proper depth, which with Hornady 3715 sits right at the cannelure.

The result will be identical in dimensions, profile, and (unfired) shoulder to the original DWM 531. The originals were 270 grain round nose, soft point.

If you cannot find the 270 grain, go to the 300 grain but adjust your powder charge accordingly. Use round nose projectiles. Otto Schoenauer's magazine is rather particular as to what it's fed. If you use spire points, be ready to feed them one at a time.

Also, load five 'dummy' rounds (no powder or primer) first and cycle them through the magazine and chamber to assure that you've got it right, then proceed to work up your loads.

I recommend that you acquire a few original, unfired, rounds of DWM 531 for comparison.

Hope this helps,
BR.

I have images, original catalog 'cuts' and dimensional drawings, but inserting photos to this site has frustrated me so far.

I have posted several such images to another site, The Firearms Forum, also as Rothhammer1.

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

Edited by Rothhammer1 (13/01/17 07:10 PM)

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Subject	Posted by	Posted on
Forming 9.5 x 57 brass...	AndrewS	10/11/16 06:22 AM
Re: Forming 9.5 x 57 brass...	Rothhammer1	13/01/17 05:43 PM
Re: Forming 9.5 x 57 brass...	DarylS	10/11/16 08:09 AM
Re: Forming 9.5 x 57 brass...	LesLeeSpeed	10/11/16 10:13 AM
Re: Forming 9.5 x 57 brass...	Waidmannsheil	10/11/16 10:35 AM
Re: Forming 9.5 x 57 brass...	LesLeeSpeed	10/11/16 02:32 PM
Re: Forming 9.5 x 57 brass...	Waidmannsheil	10/11/16 08:21 PM
Re: Forming 9.5 x 57 brass...	LesLeeSpeed	10/11/16 10:05 PM
Re: Forming 9.5 x 57 brass...	DarylS	11/11/16 04:58 AM
Re: Forming 9.5 x 57 brass...	Vladymere	11/11/16 05:30 AM
Re: Forming 9.5 x 57 brass...	Waidmannsheil	11/11/16 06:29 AM
Re: Forming 9.5 x 57 brass...	LesLeeSpeed	11/11/16 08:35 AM
Re: Forming 9.5 x 57 brass...	AndrewS	11/11/16 10:33 AM
Re: Forming 9.5 x 57 brass...	Waidmannsheil	12/11/16 07:22 AM
Re: Forming 9.5 x 57 brass...	Kiwi_bloke	13/11/16 06:43 PM
Re: Forming 9.5 x 57 brass...	Waidmannsheil	13/11/16 08:46 PM
Re: Forming 9.5 x 57 brass...	Waidmannsheil	11/11/16 12:25 AM
Re: Forming 9.5 x 57 brass...	DarylS	10/11/16 01:03 PM
Re: Forming 9.5 x 57 brass...	cordite	10/11/16 02:16 PM

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