.357SIG or .40 S&W? - Page 2 - MP-Pistol Forum

.357SIG or .40 S&W?

This is a discussion on .357SIG or .40 S&W? within the MP Reference forums, part of the Smith & Wesson MP Forum category; I got the 357 on sale with the Trijicon Night Sights. A new OEM barrel from Midway was cheaper than new Night Sights....


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Old November 17th, 2012, 08:10 AM   #16
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I got the 357 on sale with the Trijicon Night Sights. A new OEM barrel from Midway was cheaper than new Night Sights.
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Old November 17th, 2012, 03:04 PM   #17
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I own the 357 sig Compact, prefer it to the 40, and have had many 40 cal pistols, as others have mentioned, ammo availability is sometimes a problem.

I was late owning any 357 sig chambered pistols, the first was a Glock 31, Then a Sig 2022 in 40, purchasing a 357 sig barrel for it,and last the MPc in 357 sig.

I don't shoot as much as I used to, maybe once a month now (50) rounds, I more or less buy ammo now to stockpile.

Recently purchased 2 Yugo Model 57's (Tokarevs) chambered for the 7.62 x 25,
Loaded with good HP ammo, the pistols are awesome and the caliber is a close match to the power of the 357 Sig.

However the 7.62 x 25 shares the hard to find trait of the 357 Sig.
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Old November 17th, 2012, 09:29 PM   #18
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I got the 40 to 9 conversion barrel so I could shoot more and cheaper but it is nice to know I van now also use my M&P40FS as a 357. Anyone have suggestions on a good aftermarket barrel in 357 that is tryed and true?
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Old November 17th, 2012, 10:00 PM   #19
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Quote:
Originally Posted by TRIGGERDADDY View Post
I got the 40 to 9 conversion barrel so I could shoot more and cheaper but it is nice to know I van now also use my M&P40FS as a 357. Anyone have suggestions on a good aftermarket barrel in 357 that is tryed and true?
I suggest the OEM .357 SIG barrel, but both KKM Precision and Storm Lake Barrels make a good product.

Smith & Wesson Barrel S&W M&P 357 Sig 4-1/4

Storm Lake Semi-Drop-In Barrel Smith Wesson M&P 357 Sig 1 16 Twist

M&P 357sig Full Drop-In :: S&W M&P Full :: S&W M&P :: KKM Precision :: Reliable and Accurate Custom Pistol Barrel Manufacturer
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Old November 17th, 2012, 10:15 PM   #20
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Thanks for the links. I'm stoked that the M&P is so versatile and customizable. Can't wait to get possession and get to the range. I think this was a excellent impulse purchase
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Old November 18th, 2012, 03:48 AM   #21
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Originally Posted by bigpoppa View Post
I orginally purchased my M&P357Sig about Two and a Half years ago as my main carry weapon. I like both rounds(357Sig & 40S&W) so much so I got an aftermarket 40S&W barrel. Two calibers in one handgun cannot be beat and both have been flawless.
I recently purchased an M&P 357c and absolutely love it. I'll probably end up getting a .40 barrel for it. I was hesitant at first, and had a tough time choosing between the compact and FS M&P 357 SIG. I can carry the compact year round with no concealment issues,so I'm happy with my choice. I shoot the 357 SIG better than I shoot the .40 so I guess I need more range time with both. Either round will do just fine but my first choice is the 357SIG.
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Old January 26th, 2013, 08:56 PM   #22
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Strangely enough, I now have a 357 with a 40 barrel, and a 40 with a 357 barrel. I wish S&W would just make this into a package deal. Both barrels are factory S&W from Brownells. Around $80 each.
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Old January 27th, 2013, 04:43 AM   #23
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Right now it's easier to get am M&P40 barrel than a 357Sig2 barrel. If you plan on having both, you might want to get the pistol in 357Sig.
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Old January 27th, 2013, 04:10 PM   #24
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Originally Posted by Jackalope View Post
Strangely enough, I now have a 357 with a 40 barrel, and a 40 with a 357 barrel. I wish S&W would just make this into a package deal. Both barrels are factory S&W from Brownells. Around $80 each.

Nice idea. I originally got a .357FS and an aftermarket .40 barrel...works great. Extra barrels are hard to get to Canada...apparently we can only get them from Storm Lake at a considerable premium.
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Old January 28th, 2013, 12:07 PM   #25
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I have two 40sw, one is a xd40sc and a ruger p94 shoot 155 or 165 gr.
fun gun to shoot. I like the snap. It is on belt right now. My mp9compact
is in the wall safe for my wife. 642 is my great summer gun. Next gun will be
a 45 acp. All sizes 9mm 40sw and 45 all have their hot loads.
does anyone think the 357sig,40sw will fall in that 41mag. area? to many
great rounds to close in size? I think the barrel add on sw from the factory would be great, they should sell that
option. I'm getting the 9mm barrel for my 40xd.
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Old January 28th, 2013, 06:21 PM   #26
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I got a Storm Lake 357Sig barrel for my M&Pc40 with the Canadian 4.17" length. The 357Sig is designed around a 4" barrel and that offering was the closest to it. My off the shelf Speer Gold dots in 357Sig average 1438fps. The barrel is black, looks stock, and only extends 1/2" or so out of the slide. Still carries like a compact, but has the ooomph of a full size.
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Old January 3rd, 2014, 02:35 AM   #27
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Someone (either here or on arfcom) told me when I started reloading .357 SIG that they used a carbide .40 S&W die to resize the .357 SIG case as the first pass, then a standard .357 SIG die to resize just the neck and shoulder area. It works great for me (I already had the carbide .40 S&W die so it was not an extra expense).

I've not had an issue with bullet setback on my reloads. I have had factory Remington rounds setback in the case.

Just for info, I've used 9MM bullets and bullets "specified" as .357 SIG bullets. No issues with either so far - as long as they are jacketed bullets. I've not had luck with plated bullets in my S&W M&P. Some bullets (Hornady 124 grain HPs) are very pointed. Sort of remind you of the nose of a rocket. Some bullets (124 grain Nosler HPs) have a very rounded nose. Sort of like a torpedo. The Remington factory HPs have the rounded nose. Both feed just fine in my gun.

I put as little crimp on the reloads as I can get by with. I've though about getting a taper crimp die but haven't done it yet.

I too, prefer the .357 SIG over the .40 S&W. I was a big fan of 125 grain HPs in my .357's back in the early 80's and I look at my .357 SIG semi auto as being akin to a 16 shot .357 magnum, except for the accuracy of course. Neither .357 SIG semi auto I have will hold a candle to my .357 magnum revolvers.
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Old January 7th, 2014, 11:54 PM   #28
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I shoot both but I think I prefer the .357 as it is cheaper to reload and I think a little more accurate.
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Old January 8th, 2014, 12:29 PM   #29
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I have an M&P40C & shortly before Christmas I called S&W & asked about ordering a .357 SIG barrel. I was told that they weren't selling any at that time. I asked when they'd be available & he said within a few months or never. I guess he didn't know, lol.
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Old January 8th, 2014, 12:40 PM   #30
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Quote:
Originally Posted by TRIGGERDADDY View Post
I got the 40 to 9 conversion barrel so I could shoot more and cheaper but it is nice to know I van now also use my M&P40FS as a 357. Anyone have suggestions on a good aftermarket barrel in 357 that is tryed and true?
You don't need an aftermarket conversion barrel. Just buy a factory .357 barrel. (You DO need the conversion for 40->9)

Jeff
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