How did 357SIG get it's name.

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mrawesome22

New member
My father in law asked me what 357SIG was and I told him it's a pistol round. But I don't know what SIG means. I told him my guess is that it was probably developed by Sig Arms. Was I right? I tried google but came up empty. Thanks guys.
 
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scsov509

New member
Also similar to .45 ACP (Automatic Colt Pistol), .38 Smith & Wesson (not the same as 38 special), .17 HMR (Hornady Magnum Rimfire) and many others.

And for further clarification on the.357 Sig, the round was developed by Sig back in 1994 as an attempt at producing an autoloading cartridge that performed comparable to the legendary .357 magnum. Thus they dubbed the finished product ".357 SIG" in order to emphasize it's intended purpose of replicating the .357 magnum cartridge.
 
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mrawesome22

New member
Yeah, I read that there is no period before 357SIG because it doesn't shoot .357" bullets but .355". And that it was meant to duplicate a .357Mag with a 125gr bullet. And when I looked at the tables, it does! But the .40S&W does the same velocity with a 10gr heavier bullet.
 
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juliet charley

New member
There's no doubt the name "357 SIG" came about as a marketing attempt capitalize on the popularity of the .357 Magnum. Despite the marketing hype, 357 SIG is by no means comparable with .357 Magnum (except it does get farily close to one popular light-weight .357 Magnum load).
 
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juliet charley

New member
Not really--good luck comparing 357 SIG 158-grain, 165-grain, 180-grain and 200-grain loads with .357 Magnum 158-grain, 165-grain, 180-grain, and 200-grain loads. The MV of .357 Magnum 158-grain loads equal or exceed the MV the 357 SIG achieves with 125-grain loads.

The 357 SIG does get fairly close in terms of velocity and energy to one light-weight (125-grain) .357 Magnum SJHP load that is fairly popular.

The .357 Magnum and 10mm are, for all practical purposes, ballistic twins. The 357 SIG is no more comparable to the .357 Magnum than it is to the 10mm.

The 357 SIG is no .357 Magnum or 10mm. That does not detract from the 357 SIG. It is a good as any of the other common service calibres (9x19, .40 S&W and .45 ACP) even though it does give up a little permanent cavity to the .40 S&W and .45 ACP).
 
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Bg357

New member
The 357 SIG does get fairly close in terms of velocity and energy to one light-weight (125-grain) .357 Magnum SJHP load that is fairly popular.

The 357 SIG is no more comparable to the .357 Magnum than it is to the 10mm.
Click to expand...

The funny part is that you were, and you continue to, compare particular loadings of the .357 Mag to the 357SIG. In the previous post you went on to say that "the 357 SIG is by no means comparable with .357 Magnum".

It's a dichotomy, which is why it was humorous, although, as is usually the case, once you have to explain it, it's no longer funny...
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Bg357

New member
And now the bias begins to come out...

The .357 Magnum and 10mm are, for all practical purposes, ballistic twins.
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The 125gr. 357SIG and 125gr. .357Mag are what you might call "ballistic twins", the 10mm is quite another step up.
Besides the obvious difference in caliber(and therefore BC), the 10mm, loaded to it's potential, has a clear advantage in velocity & energy at comparable bullet weights.

While I wouldn't say "they're by no means comparable", they are definitely not "ballistic twins".
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Hornett

New member
I think the goal was to reproduce that one 357 mag load that is legendary for it's stopping power in an autoloader with a 4" barrel. The 125 gr hollow point at 1450 fps velocity. It comes close but didn't quite get all the way to 1450 as I understand it.
 
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Bg357

New member
I think the goal was to reproduce that one 357 mag load that is legendary for it's stopping power in an autoloader with a 4" barrel. The 125 gr hollow point at 1450 fps velocity. It comes close but didn't quite get all the way to 1450 as I understand it.
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You just have to get it from the right people, Double Tap makes a 125gr. @ 1450fps/584fpe.
http://www.doubletapammo.com/php/catalog/product_info.php?cPath=21_32&products_id=79

CorBon also has a 125gr. @ 1425/564 which surpasses their 125gr. .357Mag (1400/544).
https://dakotaammo.net/shop/product_info.php?cPath=21_37&products_id=48
 
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juliet charley

New member
The 125gr. 357SIG and 125gr. .357Mag are what you might call "ballistic twins", the 10mm is quite another step up.
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You could throw the 135-grain 10mm loads in there as well. I guess that makes them ballistic triplets. :p

BB .357 Magnum 125-grain JHP 1603 fps
DT 357 SIG 125-grain JHP 1450 fps
DT 10mm 135-grain JHP 1600 fps​

The BB 135-grain .357 Magnum pretty much smokes the the DT 357 SIG load (while the DT 10mm 135-grain load pretty well matches BB 125-grain load). So, since the 125-grain 357 SIG load gives up ~150 fps to the 125-grain .357 Magnum load, is it a comparable load (or just close)?

the 10mm, loaded to it's potential, has a clear advantage in velocity & energy at comparable bullet weights.
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You are just plain wrong here. You might want to compare Buffalo Bore's and Double Tap's .357 Magnum and 10mm loads. At comparable bullet weights, the velocities are practically identical. The best that can be said for the 10mm is that it matches .357 Magnum performance.

PS: You might want to consider that comparable can mean "similar" or "like" (not just "capable or suitable for comparison" as you understood it). That might clear up a few "dichotomies" for you. ;)
 
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hknut

New member
Juliet, you must also remember that ALL the data from the g0's on the .357's stopping power was all taken from a 6" Colt Python! Wouldn't we all like to have that gun! Compare a 4" gun ofg any maker to the 357 SIG and the SIG will match it.
 
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Bg357

New member
Juliet Charley:
You might want to consider that comparable can mean "similar" or "like"
Click to expand...
the 357 SIG is by no means comparable with .357 Magnum
Click to expand...

P.S.
Those are your quotes! You're the one who said they're by no mean's comparable, now you throw in a 10mm (different caliber/different BC/different bullet weight) and suddenly they're "ballistic triplets"?? None of this makes any sense, you're all over the board. I know what comparable means, do you?
 
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juliet charley

New member
Juliet, you must also remember that ALL the data from the g0's on the .357's stopping power was all taken from a 6" Colt Python! Wouldn't we all like to have that gun! Compare a 4" gun ofg any maker to the 357 SIG and the SIG will match it.
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hknut -

I'm sorry, but you are mistaken. The figure I quoted for Buffalo Bore's .357 Magnum was from a FOUR-INCH S&W 686 (NOT "a 6" Colt Python!").

BB 125-grain .357 Magnum 1603 fps (four-inch S&W 686)
DT 125-grain 357 SIG 1450 fps

FWIW, even their .357 Magnum out of a 3" J-frame is faster than the 357 SIG (by ~26 fps). So, no you do not have to go to a six-inch revolver for the .357 Magnum to top the 357 SIG--in fact, if we go to a six-inch GP100, .357 Magnum tops the 357 SIG by a whopping 257 fps (1707 fps).

The 357 SIG is a good round, but it is no more comparable to the .357 Magnum than it is to the 10mm. Federal and SIG labeling their joint effort the "357 SIG" was good marketing, but unfortunately that does not make it comparable to the .357 Magnum. If you want an autoloader round comparable to the .357 Magnum, your only choice is the 10mm--the true autoloader equivalent of the .357 Magnum.
 
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