9MM Largo


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tinygnat219
August 20, 2007, 11:32 AM
I LOVE This round. Very low recoil, good velocity. Why didn't this round take off sooner?

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Onmilo
August 21, 2007, 12:24 AM
Huh???????:confused:

CWL
August 21, 2007, 12:46 AM
Why didn't this round take off sooner?

You do know that this cartridge is 100 years old? For the early part of it's existence, it competed pretty well against 9mm luger.

It is a longer cartridge (costs more in material) that shoots bullets similiar to the 9mm luger and yet has less velocity, I think that it lost it's final battle when NATO countries adopted the 9mm luger as its standardized pistol/SMG round.

Ron James
August 21, 2007, 02:02 AM
I never knew it took off. I assumed it was a deceased round. It's always been a known as a Spanish round with no real advantage over the 9MM. While the rest of the world was going with the 9MM Para, Spain went with the 9MM Largo (Long)

2RCO
August 21, 2007, 02:15 AM
Er what--I've got an old Star that shoots largo and it can be a bit hard to find ammo for. I kinda like Largo as well.

What is it --you can shoot Luger (Para) in a Largo not vice versa--I am having a mental meltdown on this one.

whm1974
August 21, 2007, 06:07 PM
What is it --you can shoot Luger (Para) in a Largo not vice versa--I am having a mental meltdown on this one.

Not a good idea. From what I read the 9x19 is a much higher pressure round then the 9mm largo. And being shorter you will also have headspacing problems.

It is also my understanding that most spainish made guns(at the time) are not made of very strong steel. You could end up missing a few fingers or worse.

-Bill

Cosmoline
August 21, 2007, 06:14 PM
9x19 is a no-go in 9 largo. You can shoot .38 ACP in some of them safely, but that's an even more difficult round to find than 9 largo. .38 Super will usually chamber but it's running much hotter. Some Largo pistols are absolutely not safe with pressures of that magnitude. I've heard of people getting away with shooting super out of late model Stars, but I'm not going to try it. Esp. since the Star modelos are so #$@$ confusing.

It is also my understanding that most spainish made guns(at the time) are not made of very strong steel.

That much is a myth. What they did do is chamber some pretty skimpy, archaic pistols in Largo. Think of it as a .38 S&W break top. Such a revolver is at its limit of pressure already, so if you put a higher octane .38-200 in there it can go kaboom. There are also some real tanks chambered in Largo, but figuring out which is which and what pistols had what mods done is way too complex for safety. Just shoot proper largo in them.

Walkalong
August 21, 2007, 06:41 PM
I just bought on old Star in 9MM Largo. I have not done anything with it yet though.

Onmilo
August 22, 2007, 12:14 AM
For the Largo fans, if you need ammunition, these guys have literally tons of the stuff, both corrosive and non-corrosive.
http://www.sillc.com

I have an Astra 400 that can shoot 9mm and .38 acp without any problems.
Some of the American made generic '.38 Super' stuff is pretty mild and is actually .38 acp marked as a Super load on the box and this shoots fine in my Astra but for liability I won't say that it comes in yellow boxes.

If you are a handloader, you can aquire a batch of .38 super brass, preferably brass and not nickle plated, and chuck them in a stationary drill to turn the semi rim down to the case wall and then cut a deeper extractor groove.
Run the drill at about 1200 rpm.
You can use a fine mill file to remove the excess case rim and a triangular or fine round needle file to deepen the extractor groove.

Case length is near identical between the Largo and the ACP/Super cases.
Actually a 9mm Largo is nothing more than a .38acp case that is made rimless like a 9mm Luger case instead of semi-rimmed and a .38 acp is nothing more than a 9mm Bayard with a semi-rimmed case head, but I digress.

Load with a 9mm Luger powder suggestion and use standard 124 grain 9mm bullets.
130 grain 9mm bullets work even better under the same powder charges if you can find them.

These handloads will work fine in 95% of the 9mm Largo pistols in the market. HTH

2RCO
August 22, 2007, 12:23 AM
Isn't 38 super "hotter" than 9mm Para?

CZF
August 22, 2007, 12:29 AM
MY buddy in oregon, had a Star Super B for years. Speer offerd ammo for the
Largo for a while, but otherwise ammo was hard to come by.

Use of .38 super ammo became expensive.

He is much happier with .40 and .45 ACP.

GunTech
August 22, 2007, 12:31 AM
9mm largo is just another name for 9mm Bergmann, and later 9mm Bergman Bayard. It essentially the same case as the 9mm Steyr. It is a straight wall case, unlike the 9mm parabellum, which has a taper. Both 9mm Steyr and 9mm largo pistols can be converted to 9x19mm but it is rarely worth the effort. In its original loading, 9mm Bergmann was hotter than 9x19, however given the age of the early guns it is advisable to shoot mild loads. You should NEVER shoot 38 super. You can shoot 38acp in a 9mm Largo.

2RCO
August 22, 2007, 12:35 AM
GunTech

That's what I thought on the 38 Super. And I was pretty sure Largo was hotter than luger originally--at times my brain goes a little wonky when it comes to chamberings and loadings.

bigdaveaz
October 29, 2007, 01:31 PM
Hi guys I'm new here,been lurking for a while. I have two Super Modelo stars,like um a lot! Am looking at another but it needs a slide release, any sources? Oh by the way I was in a local gun shop and asked," by the way got any Largo nine ammo?" Guy sold me 5 boxes at $3.00 per! Dave:)

Harley Quinn
October 29, 2007, 03:36 PM
Astra 400 built in 1921, tells you a lot about it.

http://www.9mmlargo.com/400/

;)

pinotguy
October 29, 2007, 04:16 PM
Reed's offers several new Largo loadings. They seem to be pretty reasonably priced too.

FWIW, the Largo has disturbingly similar dimensions to the 9x23 Winchester. You definitely do not want to shoot 9x23 Win. in a Largo chambered pistol.

Walkalong
October 29, 2007, 07:37 PM
Welcome to THR bigdaveaz. I PM'd you.

bigdaveaz
October 29, 2007, 08:41 PM
Thanks for the welcome and the PM. Dave

Pigspitter
October 29, 2007, 08:45 PM
Think of it as a .38 S&W break top Hey, my model 4 does just fine.

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