9x57mm reloading data please

[INKWE]

I received a 9x57 original full stock Mauser with the hair trigger as a gift from one of my uncles.

In South Africa, nobody keep the ammunition for this caliber.

I believe that one can take a 8x60mm cartridge and neck it down, is that true?

Can someone help me with some reloading data for this cartridge?

thanks

 

[bonza]

Wouldn't that be the 8x57mm Mauser (7.92mm) case necked up to 9mm?
In Cartridges of the World (3rd Edition) he shows 9x57mm Mauser loads with 245gn cast bullets (Lyman mold #358318GC) using 38gns of IMR3031 for 1950fps. Also shown are loads for 250 & 280 grain jacketed bullets using IMR3031, 44gns with the 250gn bullet, & 43gns with the 280gn for velocities of 2260 & 2030fps, respectively. Original factory loadings were with 245gn, 275gn, & 281gn projectiles.
I should think you'd be able to find plenty of 8x57 Mauser brass in South Africa, but reloading dies might be a harder to get locally, Midway shows them as being available on special order for US$142.99 http://www.midwayusa.com/ebrowse.ex...egorystring=9315***731***702***8344***9261***
Make sure you know exactly what caliber your rifle is chambered for, as another popular round was the 9.3x57 Mauser. Both Norma & RWS are still making ammo for that caliber, but not the 9x57 Mauser.

 

[rcmodel]

9x57 Mauser = .356" bullet.

9.3x57 Mauser = .366" bullet.

Make sure which one you have.

Both are simply the 8mm Mauser necked up to the larger calibers and could be formed from 8mm cases by simply running them through the sizing die / expander.

Cases could also be made from 30-06 but would need trimming to length after sizing.

rc

 

[INKWE]

Hi Bonza and rcmodel,

You guys helped alot.

The rifle is a 9x57mm and not the 9.3x57.

 

[Ol` Joe]

9x57 brass is ~0.005" smaller diameter at the base then 8x57. There also is a rimmed version, the 9mmX57R. I think RWS still makes ammo but as to data I can`t help, sorry.

 

[bonza]

I checked the RWS/Dynamit-Nobel website & they don't list the 9x57mm Mauser. Shouldn't be difficult reforming 8x57mm though.
I almost bought a 9x57mm sporter, built by Husqvarna a few months ago. Very tempting, but decided to let it pass.

 

[INKWE]

I've never shot the 9x57 cartridge before but by the look of the ammo it looks like a nice caliber for the bushveld here by us.

Wonder why this cartridge was never that popular?

 

[NCsmitty]

Here's a load found at another site. It only offers 1 load, but it's more than what you had. Data is elusive for this old round.

The old 281 gr RWS loading @1920fps caugt my eye. An old Lyman reloading manual listed the 9x57 Mauser and data using 4064 with the 280gr jacketed bullet.
I used this data as a reference and worked up a load for the 290gr cast gas check bullets. I was able to achieve 1920fps with 42.0 gr of Accurate Arms 4064. Pressures appear to be very mild. This powder fills the case to near the base of the bullet, so loading density is good. Extreme spread is very good, remaining under 50fps.

NCsmitty

 

[Kernel]

9.3x57 uses a 0.376" bullet (not 0.366 as stated by rcmodel).

http://members.shaw.ca/cstein0/metric.htm

I have a German friend that has a 9.3x57 with a stubby 18" barrel built on a Husqvarna action that he uses for wild boar from a tree stand. In many respects the 9.3x57 is like the .375 Winchester. A metric version of the "brush buster" concept for light handy carbines and hunting at "woods ranges". The 9x57 is comparable to the .356 Winchester.

For the 9x57 I'd look to jacketed bullets in the range of 220 grain to 250 grain and powders with speeds ranging from Reloader 11 and IMR 3031 to IMR 4064 and 4895. My Powley Computer says 47.5 grain of IMR 4064 with a 220 gr jacketed bullet would be a good starting load. Velocity around 2375 fps.

 

[windy]

Hi, just stumbled onto the forum. I load for the 9x57, and will gather some data from home this evening to post. I've managed to acquire some old Kynoch 245-gr ammo, and Buffalo Arms has .356 bullets, both pointed and round-nosed softpoints. I just neck-size new 8x57 brass with a 9mm expander, a one-step method that has worked flawlessly. So far my most accurate loads have been with pulled bullets from old U.S. ammo (280gr roundnose) and pulled Kynochs from an older batch of 245's, but that may just be my particular rifle's idiosyncracy. Anything over 47 grains of 4064 shows signs of high pressure in my rifle with the 245's and 250's or 46 grains with the 280's, but recoil's not bad in my >7 lb. mauser. My best information is that it's a ballistic match to the .358 Winchester--more powerful than the .375 Winchester, a bit less than the .35 Whelen. It should be great for your hunting grounds on everything short of rhino, cape buffalo and elephant, and adequate for those in a pinch, especially with 275-280gr. solids, which I think you can get from the premium bullet folks. It's certainly everthing I could ask here in the U.S., even in grizzly bear range, out to 250 yards or a bit more. Hope this is useful.
mind yer topknots! windy

 

[windy]

More 9x57 data

Hi, again. I'm back to my home library; I have P.O. Ackley's 2-vol. set from 1962 in hand. I haven't been bold enough to reach his maximum loads--as I said, I've gotten pressure signs above 47 grains of 4064 with the 250gr RNSP's; but Ackley said he shot 250's with up to 51 grains of 3031, for 2500 ft/sec, 50 grains of 4064 for 2400, and 52 grains of 4895 for 2400. Ackley may have been shooting a Model 54 Winchester, which might have been a bit stronger than the mauser. I repeat, I can't feel comfortable with these loads--but they certainly match up well with the Whelen, and even approach the 9.3x62. Good luck with your mauser, and if you need any help with components that can be legally shipped, just let me know.
mind yer topknot! windy

 

[Big Boar Shooter]

9 x 57 barrel

I realize that this thread is "terribly old" to say the least. However, I recently purchased on-line a used, never mounted, Oberndorf-made gorgeous 98 Large Ring Mauser barrel that is factory marked with a "9" to signify 9x57. I am exasperated, however, about what caliber it actually is. It chambers an 8x57 perfectly, but it does not chamber a 9x57 whatsoever. I am using factory 9x57 Kynoch rounds to check it with. The problem seems to be in the shoulder, because the bore is the correct .356 when I mike it. I have no way to mike out the chamber itself to determine where the problem is. Does anyone have any idea what is wrong with this barrel, and where I can get it bored out or whatever it takes to correct the problem, at a reasonable price. I am retired and on no income but Social Security, so I cannot put a whole lot into getting it properly chambered. The 9x57 brass extends out of the chamber about 1 to 1.5 millimeters, where the 8x57 drops in correctly. Does anybody have any info on the Mannlicher-Schonoeur 9 x 56? Would the basic cartridge be the same, with a shorter overall length? I have a near-mint 1935 Argentine action sitting waiting for the barrel to be installed, and need advice on this as soon as possible. The wild hogs are already tearing up our fields, and I need to be putting some fresh pork on the table before the weather gets too hot here in Alabama. Thanks!

 

[Kernel]

Have you tried a chamber cast? It's easy. Google YouTube video, key words "chamber cast Cerrosafe".

Where do I go to get some of that pork?

 

[Scooter22]

Sounds like a very nice rifle. Could you post some pics? IIRC the 9x57 was made to change 8x57 rifles so they would not be in a "military" round. Should be a great hunting round. Good luck.