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Thread: 9mm STEYR

  1. #1
    Boolit Master
    Join Date
    Sep 2010
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    362

    9mm STEYR

    I have a mod. 1912 9MM, STEYR. what can i use to make or form them from? commercial ammo is too expensive.

  2. #2
    Boolit Master
    Join Date
    Mar 2014
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    St. Louis
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    Maybe you could make it from 9mm Largo? Graf's has 100 cases of 9mm Steyr for 20.99 and Starline has 500 cases for 97.50.

  3. #3
    Boolit Master
    Join Date
    Sep 2010
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    if i was sure that 9 m/m largo would work i would go for it- $20.99 a 100 is a killer price. will wait for some one to get back to me with info that will work, thanks.

  4. #4
    Boolit Master
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    Mar 2014
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    The 20.99 and 97.50 were prices I found for 9mm Steyr brass. Looking at the cases, 9mm Largo had a longer and deeper extractor groove. However, 9x23mm brass is almost identical to the Steyr. It is the same length as well. Difference being that one case is tapered and the other seems to be straight walled. I'd bet that fired 9x23 brass through a 9mm Steyr die would be fine, but someone with more experience will chime in and I totally understand you wanting information from someone who had tried it. I bet BrassMagnet might have an answer for you. That man is an encyclopedia of knowledge.

  5. #5
    Boolit Master
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    Sep 2010
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    i hope so, BRASSMAGNET where are you when we need you?

  6. #6
    Boolit Master
    Join Date
    Jan 2008
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    168
    I always shot my 9mm Steyr pistols with 9mmLargo ammunition.

    Spanish surplus (used to be cheap and plentiful) & Blazer aluminum cased 9mmLargo were the 2 that were commonly available.
    Never any problems. The Blazer stuff was very weak powered and dirty to shoot but functioned the guns just fine.
    I still have a couple boxes of both but that's about it.

    I reloaded for them using 38acp/38Super brass. It was easy to find at the time.
    I know the stuff is a semi-rim, but it will in most instances still fit the breechface of the pistols OK.
    The same reloads were used in my Astra 400 and Star Model A.
    Reloading dies were common 9mmLuger dies. You have to adjust them in or out on the sizer to get the case sized just right. But they work.
    The expander and crimper are used just as you would if loading 9mmLuger.
    Regular 38Super dies work fine of course too, but I didn't have any of those.

    All this stuff is cheap and readily available now and in carbide dies, ect.
    New 9mmLargo brass is too which is something that in boxer primed cases was no where to be found.

    Another case that can sub is the 38 Super Comp..it's a 38Super Rimless.,,just another 9x23 rimless case but the run and gun shooters needed it I guess for something. More $$ than plain 9mmLargo brass of course, but you may run accross some for a deal sometime.

    If I start to reload the 9mmLargo again for the one Steyr pistol I have left, it'll be on some new 9mmLargo brass from Starline and I'll just probably use the 9mmLuger dies again. Maybe treat myself to a set of cheap Lee carbide 38Super dies!

    Standard 9mm bullets, the orig was a 130gr IIRC, but you can load most anything. I won't print any data, there's plenty around.
    I used to start with 380 data to be on the safe side and it actually did function the pistols at times. Usually ended up in the very low 9mmLuger data.
    Be gentle on the old pistols, parts are expensive to find.
    Fun hole punchers for a day at the range.

  7. #7
    Boolit Master

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    Yes, yes...all well and good, but why not use the newly produced 9mm Steyr brass? Like sigep1764 said, it's readily available from Grafs at a reasonable price. Always best to use the brass specifically designed for the pistol under discussion.

  8. #8
    Boolit Master

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    The factory GECO 9 Steyr ammo uses a 117 gr bullet, and is fairly (1200fps) hot. I load a bunch of it in 38 super comp and any other rimless super brass I can find on the ground after the ipsic tai chi matches.. Most brass that has a rim dia. of .380 to .390 will work fine when sized in a std 38 super die, the Geco cases are .380 dia straight from mouth to rim. I usually load a mid-range spec super, 115 or 124gr plated for the MP-34 .. I shoot the factory Steyr ammo when I need the brass for making 9x56 jacketed bullets for the Mannlicher . Recycling yeah thats it.... If you have to have new brass, Grafs has the armscor 38 super rimless at $32.99 for 200 cases plus shipping($8) good brass.

    edit to clarify....

    the factory GECO Steyr ammo is berdan primed, and the 9mm super comp and win 9x23 brass has a body taper like the parabellum. If you run it into a straight 38 super size die you will get a pronounced belt...
    Last edited by SOFMatchstaff; 07-08-2018 at 01:38 PM.

  9. #9
    Boolit Master
    Join Date
    Jan 2008
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    168
    Quote Originally Posted by Der Gebirgsjager View Post
    Yes, yes...all well and good, but why not use the newly produced 9mm Steyr brass? Like sigep1764 said, it's readily available from Grafs at a reasonable price. Always best to use the brass specifically designed for the pistol under discussion.
    'Cause I load(ed) for a Star model A and Astra 400 as well as the Steyr. and they would be once again if I started reloading the caliber again .
    So I would use one brass in all three guns. I'd choose to use the 9mmLargo
    9mmLargo factory & Milsurp stuff worked just fine in the past, they'll work just fine again in the form of reloads.
    Yes,Yes,,it's all well and good.

  10. #10
    Boolit Master
    Join Date
    Jan 2016
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    382
    Decades ago GONRA made these from .38 Special. Head diameter is the same.
    >>> Thats important! <<<
    Lathe verk to turn off the rim and cut extractor groove.
    (Make an arbor to fill case. Put in 3 jaw chuck. Turn cartridge case head to spec.)
    Shorten to length.

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check