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Shooting & Reloading - Mausers, Big Bores and others >> Mannlicher Discussion forum & Archive

DarylS
.700 member

Reged: 10/08/05
Posts: 27005
Loc: Beautiful British Columbia, Ca...

Re: Newbie questions about MS1910 (9,5x57MS)
03/06/13 08:16 AM

I do not have a 9.5X57, although in working with 9.3x57 I had in a Model 96-type action in a Husqvarna, I found as you did, a long leade or throat. This is common for these rounds which I believe originally were chambered this way for fairly long straight-sided bullet of round nosed shape.

I do not know why your brass is ticking with such light seeming loads.

Are you sure it's a 9.5x57 and not a 9.3x57?

As far as I've seen, the 9.5x57 has a greater capacity than the 9.3x57 - ie: less slope in the case & according to COTW, is virtually what we would call an "Imroved" case, with it's .460" shoulder and .470" head - .005" taper per side. This means the 9.5x57 should be out producing the 9.3 by a considerably amount even if chambered in the same weaker model 96 action.

This isn't happening for you. Why?

Even factory 9.3x57 ammo runs 2,050fps with a 286gr. bullet at a measely 34,000CUP - hardly any pressure at all, when you consider the action is also chambered for rounds that produce over 52,000CUP breech pressure.

According to COTW, factory 9,.5x57 runs 270gr. at 2,150fps.
COTW lists 44gr. IMR3031 as delivering a 270gr. bullet at 2,150fps.

Why your rifle appears to be producing more pressure than it should, I do not know. Perhaps you are using too fast a burning powder, a powder that produces maximum pressures before producing what should be even sub-normal speed?

My 9.3x57 makes 2,300fps with the 270gr. Speer, and 2,200fps with 293gr. TUG's along with 2,175fps with 300's.

Your rifle should beat all of these velocities with same weight bullets when used with modern powders. I use either H4895 or BLC2. In my rifle, the pressure is actually quite low, as the case shows less than .0005" (1/2 thou) expansion at the web. The bolt can be raised with the little finger with no more pressure than lifting the bolt after the rifle has been dry fired (no ctg. case).

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

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

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Subject	Posted by	Posted on
Newbie questions about MS1910 (9,5x57MS)	kumpe	03/06/13 06:01 AM
Re: Newbie questions about MS1910 (9,5x57MS)	xausa	29/10/13 06:23 AM
Re: Newbie questions about MS1910 (9,5x57MS)	kumpe	29/10/13 07:55 AM
Re: Newbie questions about MS1910 (9,5x57MS)	Igorrock	03/06/13 06:27 AM
Re: Newbie questions about MS1910 (9,5x57MS)	kumpe	03/06/13 06:48 AM
Re: Newbie questions about MS1910 (9,5x57MS)	HendrikNZ	03/06/13 06:59 AM
Re: Newbie questions about MS1910 (9,5x57MS)	DarylS	03/06/13 08:16 AM
Re: Newbie questions about MS1910 (9,5x57MS)	pondoro62	03/06/13 09:45 AM
Re: Newbie questions about MS1910 (9,5x57MS)	Marrakai	04/06/13 12:08 AM
Re: Newbie questions about MS1910 (9,5x57MS)	kumpe	04/06/13 03:56 AM
Re: Newbie questions about MS1910 (9,5x57MS)	DarylS	04/06/13 04:41 AM
Re: Newbie questions about MS1910 (9,5x57MS)	kumpe	04/06/13 04:56 AM
Re: Newbie questions about MS1910 (9,5x57MS)	DarylS	05/06/13 12:21 AM
Re: Newbie questions about MS1910 (9,5x57MS)	kumpe	05/06/13 02:35 AM
Re: Newbie questions about MS1910 (9,5x57MS)	DarylS	03/09/13 02:17 AM
Re: Newbie questions about MS1910 (9,5x57MS)	kuduae	03/09/13 04:18 AM
Re: Newbie questions about MS1910 (9,5x57MS)	kumpe	28/10/13 06:14 AM
Re: Newbie questions about MS1910 (9,5x57MS)	Kiwi_bloke	06/06/13 06:59 AM
MS1910 (9,5x57MS)	Brento	02/09/13 09:10 PM
Re: MS1910 (9,5x57MS)	DonZ	02/09/13 10:53 PM
Re: Newbie questions about MS1910 (9,5x57MS)	kumpe	07/06/13 04:58 PM

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