Only place I can find any is on line. Local store doesn't stock it any more. None at the local Dunham's either. Is the caliber dying out?

yup !!

S&W M&P .357 Sig pistol... any chance?

Nope. I get it here all the time...

Prvi Partizan PPU .357 Sig 125grn FPJ 50rd Box

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RIP Shipmate

The only guy I knew who shot a .357 SIG also shot a Colt AR-15 in 9mm...

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Another worthless caliber. Bring it on guys. I can take it. LOL.

Thanks for the heads up. Ordered 10 boxes.

Laughter is the key to happiness

Well, there's a box for sale on my local Armslist for $28 !

The LGS has guns and ammo in .357 Sig.

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U.S. Navy - U.S. Army, ret

Local Cabela's has plenty of it.

As well as Academy.... not many choices but there is some.


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357 sig is about like 41 magnum when it comes to who has ammo . Usually when you find it they won't have a very big selection , different weight bullets and different manufacturers . I and my sister are real 41 magnum nuts . I recently converted my Sig P320 from 9mm subcompact to 357 sig compact using one of the "x-change kits " from Sig , comes right to your front door , no FFL required . I couldn't be happier . I've become a real convert to the 357 sig . It's a fairly easy cartridge to reload , contrary to what some will say .

It's not gone. It just never found it's calling.

Many shooters already owned auto pistols in multiple calibers by the time the .357 Sig was introduced. I owned 2 .45s, 3 .40s, and 3 9MMs. I really didn't want another caliber to take care of. I finally got curious enough to purchase a .357 barrel for my Glock 22, and it really is a hot, potent, and impressive round. However, I don't think it lives up to the hype that it's a match for the esteemed 125 Gr. .357 Magnum. It's also more expensive than other ammo and kind of a pain to reload.

For me it's been an interesting experience. However, for those of us who already own pistols in other calibers, my opinion is that it's really just a solution looking for a problem.

I have a Sig P239, Glock 31 & 32. My son has a Glock 31 and Sig P229. The .357 Sig is a fine cartridge. Try it, you'll like it.

Off duty, I shoot and carry 9mm. If .357 sig cost as much as .40 s&w, then I'd probably shoot and carry .357 sig.

Years ago I came a cross a "used" Sig 229 in .357Sig w/ an extra .40 barrel and IIRC 4 mags for $500..... it is my only .357sig or .40S&W...... I was and am quit content to stick with 9mm and .45s...... but it's nice to have the option if I ever need it .

I can use my 245/220 leather.........................

I bought 2 more mags for the gun.........................

I'm sure this has been posted before but for reloaders the cost of the .357 Sig is almost the same as 9mm. I just run the clean cases through a .40 S&W carbide die then right through the Dillon progressive without lube. Buying factory ammo is a bit costly.

I suspect .357SIG will remain on the commercial market for some time. There's no shortage of folks who like to shoot their guns for the "wow" factor, meaning muzzle blast effect and noise.

In the LE field the market has been declining, though. I don't keep lists of such things, but I usually hear of more agencies transitioning away from .357, here and there, than to it.

When I asked someone at S&W why they dropped the M&P357 from their LE catalog, I was told that they'd still make a production run for any agency who wanted to order M&P357's, but demand had dropped low enough that it was no longer considered viable to keep it as a standard production model/caliber model.

When I did another Glock armorer recert earlier this year, I asked the instructor about seeing agencies using .357 models in the classes. He said he couldn't remember the last time he taught a class where an agency was carrying .357's, and it wasn't considered a caliber that saw a lot of LE use. He looked around and asked some other armorers in the class if they knew of anyone carrying it, and the only example anyone could think of was an agency who carried a different brand of duty weapon in .357. This was pretty much the same thing that's happened in previous Glock classes, too.

I actually know another instructor who owns a Glock in .357, and he effectively used it in a shooting some years ago, but he doesn't carry it anymore. He prefers to carry 9mm or .45 ACP.

I suspect that there may be a regional influence involved in some places, meaning where a large agency may carry it, so some smaller ones might follow suit.

It's not a caliber I've often seen on the shelves in the occasional stores where I've looked in CA, OR & WA in recent years.

I've still seen a lot more .357 Magnum than .357SIG on shelves, but it's not surprising that the .357 revolver caliber remains more popular on the commercial market, considering the huge numbers of revolvers that will remain around for many years (and the greater versatility of the Magnum revolver cartridge, over the pistol cartridge ).

But hey, there are still folks who enjoy owning and using 10mm and .41 Magnum, so why not .357SIG? That's one of the great things about America and the American firearms market, after all, right?

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Ret LE Firearms inst & armorer

I'd imagine 10mm is more popular than .357 Sig, at least in the civilian market.

I'd like to have a .357 SIG, but am not actively seeking one.
It's claims of being equal to the .357 mag 125 grain load were grossly deceptive and it soured me a bit.
If you compare it to the watered down, castrated .357 mag ammo being foisted upon us by the ammo companies' lawyers, the SIG round comes close.
If you compare it to actual 125 .357 Mag ammo, then NO.

For an SD or HD pistol, I'd just as soon have 9mm +P, .40, or .45 (ACP, not that stubby Glock abomination).
As much as I love high pressure magnum handguns, I don't want drop the hammer on one indoors.

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What would Jim Cirillo do?

Umm......

357 SIG Pistol Ammunition at SGAmmo

Bulk Ammo for Sale Online Free Shipping Available

.357 SIG

357 Sig Ammo in Bulk at AmmoMan.com Ships for Free



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IIRC, Buffalo Bore has it.

Sometimes, ordering online is your best bet.

Sometimes, reloading is your best bet.

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What would Jim Cirillo do?

SGA has .357 SIG Speer Lawman 125 gr. for $299 for 1000 rounds right now. That ammo is very consistent ~ 1.5" 5 shot group at 25 yds in the S&W OEM .357 SIG drop in barrel in my M&P .40 Pro CORE 4.25" barrel full size.

Amen! I did the same conversion with my SIG P320 9mm. I do most of my shooting with my M&P 40c (my EDC), so the transition to the .357 SIG round was an easy one. I have never become so accurate so quickly with a new caliber, and have now become a hard-core .357 enthusiast. My P320 was mostly gathering dust as a 9mm, but now I'm firing 300-400 rounds a month with it as a .357. I'm thinking that the 1300+ feet per second muzzle velocity may have something to with the .357's accuracy. Since accuracy is paramount when shooting, I'm not sure why this round isn't more popular, but as long as ammo makers keep producing it, I won't care what others do or think.

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What, me worry?

TX Highway Patrol carries 226 in .357 Sig.


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Underwood has some really strong .357 Sig cartridges with name-brand bullets. Sellior and Bellot does a 140 grain FMJ that makes a great field or practice round. Target Sports USA frequently has great prices on .357 Sig practice ammo (typically Speer Lawman).

I became a senior firearms instructor back in 1990 and I own two pistols in .357 Sig. It is much stronger than other service calibers producing around 500-600 ft lbs of KE depending on barrel length, yet is the same size as a 9mm pistol. I have never experienced a failure of any kind with either of my .357s (Glock 32 and 33) in twelve years of use.

Departments have to have pistols that work for all their officers, so they use pistols with a cartridge that satisfies the lowest common denominator. IOW, something with light recoil. However, when the risk of failure creates an unacceptable potential outcome, the .357 cartridge shines like a new penny. That's why the Secret Service continues to use it. Think of it as a demi-magnum...

I think the biggest problem for .357 Sig use in LE is the cost. It's more expensive and I really don't know why. One of our local PD's uses Glocks in .357 Sig. However, for whatever reason, the Mississippi Highway Patrol recently went from .357 Sig to 9 MM. I have several pistols in .357 Sig and have no problem with them.

It's a catch 22. It's not more popular because it's more expensive and it's more expensive because it's not more popular. The Great Obama Ammo shortage hit it really hard in the civilian market. With the all the research money being put into 9mm ammo .357 sig isn't any more effective and nothing is cheaper than 9mm.

I think it is easier and cheaper to find online than in most stores...I think part of the movement away is akin to the movement away from .40 S&W...there are a lot of excuses, some real and some imagined as to why there is a move to the 9mm...

as to performance, I think that the 357 SIG did exactly what it was designed to do, sold to exactly who SIG was trying to reach along with a lot more...it just seems to have fallen somewhat from favor as has the .40 S&W and to some extent the .45 ACP...

I like 357 SIG it's just that the gulf between calibers seems to have narrowed since it's introduction...

Good luck with your choice.

Bill

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Fast is Fine Accuracy is Final

I skipped to the end of this thread so forgive if I repeat. To all those folks out there asking if their particular 9mm will shoot +P+ or how far you can push the data on reloads and all other inquiries as relates to getting more bang out of a 9mm...my reply was always if you want more bang than your 9mm is providing then you need a bigger caliber, not more juice in your 9!

Well, that's exactly what a 357 Sig round is... a 9mm on steroids! It shoots a 125g 9mm sized round 500fps faster. So for all the opines that the 357 Sig has no market I'm absolutely stunned that the 9mm Rambos haven't picked up on it!

For the record I have the M&P 357c and love it.

The what? Oh! The .355 Sig. I know every manufacturer wants their own proprietary gun/caliber, but I would have been a little more interested if they had called it what it is.

Well then a 9mm would be called a .355. So I think there is a reason for the different name.


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So why not call it the 9mm Sig?

9x17= 9mm Kurtz= .380acp= .380 auto= .355in dia
9x18= 9mm Makarov= .364in dia
9x19= 9mm Luger, 9mm Parabellum, 9mm NATO= .355in dia
9x21= 9mm Largo= .355in dia
.38 super= .355in or .356in dia
9x23= .355in dia (basically a .38 super magnum)
9x29= 9mm WinMag= .355in dia (designed for semi auto pistol from AMT, and LAR)
.357 Sig= .355 (.40S&W case necked down to accept a 9mm/.355in bullet)

Oh that's why. Nevermind

Of course getting the attention of those at the time holding on to the .357 Magnum is what necessitated the name...it got many to move who wouldn't normally at the time consider 9mm anything.

Bill

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Fast is Fine Accuracy is Final

Use a KKM barrel, same magazine can switch out in about 3 minutes. Load both calibers so always have enough ammo.
Like having two guns , only one registered.
Converted my Sig 226 .9mm to .22 with the sig conversion.

Did or does anyone make a .357 SIG conversion barrel for 3rd gen Smiths?
The beefy 5906 or 4006 would make a good candidate for such a conversion. I'd love to convert my 5906 to .357 SIG.

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What would Jim Cirillo do?

I am a true fan of the .357sig, NEVER an issue with it. I like to mailorder my ammo so i have a constant supply.

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M&P 357sig,G31 357sig,M&P 9

The .357 Sig is NOT a necked down .40 case. If you necked down a .40 case it would be too short.

It's a shortened and necked down 10mm. 357 Sig brass is 0.009 longer than the 40s&w brass.

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It's not dying. It just didn't succeed as far as SIG hoped. But a long way from dead.
Too many LE agencies adopted it, and regular folks who own them, swear by them.

Availability of guns and ammo on local shelves seems to vary regional, appearently I'm in a hotspot, because I see .357Sig at least as often as I see .357mag. Not much "variety" , but face it, the cal is built around 125jhp.

The .45GAP currently has one foot on a banana peel. But if the*right * gun gets introduced AND put into full production, it will give the same boost that Delta Elete did for 10mm.

Quite right. I pulled that from somewhere else without checking it.

It's a shame that the 357 hasen't caught on more than it has seeing how it out performs the 9, .40, or .45

Uh you got stats to back that? Depends what ammo compared to what. Many 9mm and 45 loads that blow out 357 Sig. I prefer straight 357 mag for more power.


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Yes, the reason, according the then National Sales Manager for SIG was to make the caliber sound like the .357 Magnum revolver cartridge. This was supposed to induce LE administrators into buying it on the theory that it was good as the 125/1400 load in the revolver.

I test all four calibers extensively

The Penetration Channel

I always thought the 357 Sig was a cartridge looking for a reason to exist. (same thoughts on the 5.7 and .22TCM)

Thank you for that video, your test seems quite fair as well as NON-BIAS.
Personally, i like all of the calibers tested. truthfully, i expected the .40 to punch through as much as the 9 and .357

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M&P 357sig,G31 357sig,M&P 9

I've always felt the .40 was the ctg that was answering a non-existent question. ( I could ramble about the real reasons for its instant sucuess, but that's to drifty for this thread.

The .357Sig exactly fills a niche, and does exactly what was claimed for it. ( You have to look at exactly what was claimed for, not what some people mentally extrapolated from there.)

Service sized semiauto, on 9mm/ .40 frame size, matching the performance of then current name brand 125gr .357Mag fired from 2.5-3.0 inch bbls .

Categorically does that. Depending on specific guns and specific lots of ammo some Sig can overlap with some 4in Mag.

Dosen't claim to handle same range of bullet weights , or match power levels of max handloads/ boutique loads.

I've see more explanations about why the bottleneck.357Sig feeds better than 9mm/ .40 , than explanations about why it would be worse , by close to 2 to 1. Is one side right, and the other full of it ? IDK. But I'm in proximity to enough .357 users, and no complaints about unreliability.

The 5.7 was an answer to NATO asking to replace the 9mm. At the time NATO thought of doing away with the 9m handgun and replacing it with the PDW (Personal Defense Weapon). Think something along the lines of the P90, HK MP7. Basically a firearm the size of an Uzi, MP5 but with better ballistics then the 9mm. This weapon would be for someone who's in a dangerous area but not in the front lines.

The 5.7 won over the 4.6x30 HK. The Germans objected and standardization was halted.

The P90 PDW is used by a lot of special forces around the world. US secret service uses them as well.


Besides that.....357 Sig, like everything else is just technology moving forward. It doesn't always work and may not become popular but technology doesn't stop. If you look at it, 9x19 was a cartridge looking for a reason to exist too. It's parent was the 7.65x21 Parabellum. And it's parent was the 7.65x25 Borchardt.


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The .357 SIG round is still around, and SIG still makes several models using that round. S&W has discontinued their .357 semi-autos, and if you go to the S&W site, you won't find any there.

(There's a long post elsewhere here on the forum about the problems the NC Highway Patrol had with their S&W M&Ps in .357; S&W couldn't get them right, and the NCHP switched to SIG 229s in .357.)

Some LEO agencies feel the .357 round does a better job of penetrating windshields than other rounds.