9mm Steyr

[grullaguy]

Hi there

Anyone here casting and reloading for the 9mm Steyr?

The Lee 95 gr Makarov mold is about the only currently produced commercial mold that I see might work.

A fellow at the range was complaining about how expensive the ammo was for his and I threw in my usual cast bullet pitch.

Maybe on this one I bit off more than I can chew.....but I do love a challenge.:bigsmyl2:

[rintinglen]

The 9mm Steyr is virtually identical to the 9mm Largo. Brass is not common--once in a while Starline makes some--but useful substitutes can be crafted from 38 super brass. It will be short, but loading the boolit out to the correct oal makes for a shootable round. 9 mm Winchester Magnum brass can be trimmed to length but may require reaming the brass. I made some from .223 Remington brass, but that was a real PITA, since the brass had to be trimmed, reamed, and was very under sized, resulting in bulged cases. Use 9mm luger load info and 9mm boolits--not 9mm makarov .363 stuff but regular .356 boolits.
I owned a Steyr 1911(IIRC, mine was stamped 1914) and made every round I fired in it. These were fairly common back in the 70's.

[grullaguy]

The 9mm Steyr is virtually identical to the 9mm Largo. Brass is not common--once in a while Starline makes some--but useful substitutes can be crafted from 38 super brass. It will be short, but loading the boolit out to the correct oal makes for a shootable round. 9 mm Winchester Magnum brass can be trimmed to length but may require reaming the brass. I made some from .223 Remington brass, but that was a real PITA, since the brass had to be trimmed, reamed, and was very under sized, resulting in bulged cases. Use 9mm luger load info and 9mm boolits--not 9mm makarov .363 stuff but regular .356 boolits.
I owned a Steyr 1911(IIRC, mine was stamped 1914) and made every round I fired in it. These were fairly common back in the 70's.

The good news is this fellow had been shooting commercial 9mm Steyr ammo for some time and has kept all the brass.

I read that the groove diameter in most of the 9mm Steyrs is .365".

[Alan]

I think that groove diameter was transposed. According to "Cartridges of the World", it is the same as 9mm Luger which would be .356", and performance close to the .38 Super.

[grullaguy]

I think that groove diameter was transposed. According to "Cartridges of the World", it is the same as 9mm Luger which would be .356", and performance close to the .38 Super.

Great, that would make things much easier.[smilie=s:

[Larry Gibson]

I ended up with 350 rounds of commercial 9mm Steyr loads in new Starline cases with 115 gr fmj bullets and a box of 50 Hirtenberg factory 9mm Steyr in a trade.......but no 9mm Steyr handgun:( They have .356 bullets.

Larry Gibson

[rintinglen]

Don't cry Larry, just pick up one of those Astra Water Pistol M-400s and blaze away. When you run out of brass--sell the gun! (easy for me to say--it's not my money).

[Two Old Dogs]

I load Lyman 356402 bullets cast from wheelweights and sized .357, averaging 123 grains powered by 4.2 grains of Bullseye. Other suitable powders are Unique, Red Dot, PB, SR 7625and I'm sure there are others, but I'm old school and experienced in the listed propellants.

9mm Steyr is dimensionally equivalent to .38 Super Competition brass (rimless .38 Super) and was in stock at Midway in late February and priced reasonably. Turning the rims off .38 Super or reforming .223 Remington will produce shootable brass, but is time consuming.

Loads are equivalent to .38 ACP (NOT .38 Super) and should be kept in the 23000 to 26000 psi (SAMMI pressure specifications) range. Loading data is available in older Lyman andother reloading manuals on on ;the internet.

[Freischütz]

Here are two HS-6 loads that work well in my Steyr M1912s. Since the guns are old and I've never seen any replacement recoil springs for sale, I usually use the lightest load that will function reliably. In my case that's the first load listed.

The data shows powder weight/velocity/std dev. All loads use 356402 sized .358 and an overall length of 33 mm.

7.0/1048/22
7.5/1162/3

38 ACP loads are a good starting point. I've used the data in the older Hornady manuals.