M&P 357 why discontinued?

This has been discussed elsewhere here on the S&W Forum.

It may be more than just a seeming lack of demand.

My son is a NC State Trooper. The NC Highway Patrol has been using .357 SIG weapons for a number of years. Several years ago they switched to the S&W M&P in .357 -- and soon after began to have problems with their weapons. They weren't widespread, but they happened often enough to concern some of the management team, including senior officers who experienced the problems when they periodically qualified.

I never heard all of the details... or if I did, don't remember them, but they seem related to some very aggravating and inconsistent feed issues. My son never personally experienced any issues.

S&W sent down their engineers and specialists, worked with the NCHP's weapon specialist, and even took some weapons back with them, but were unable to resolve the issues.

S&W took back the weapons and some time later S&W discontinued the .357 versions of the M&Ps. The NCHP switched to the SIG P229s in .357 SIG and there have been no problems with those weapons. This whole event got a good bit of coverage in local and state news.

We may see a S&W .357 SIG semi-auto again, one of these days -- but it'll probably be with a newer model or a subtly different M&P. LEOs like the .357 SIG round, feeling that it does a better job of penetrating windshields than other rounds. (Most NC State Troopers have also been issued M-16/ARs and I suspect THAT weapon would be the weapon of choice, if they know they may have to fire on a moving vehicle and have time to get the AR out of the trunk.)
 
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I have yet to experience any , any feed issues with both of my firearms , Sig P320 and the MP 40 conversion . I have seen that when converting glocks from 40 to 357 that the mag for glock 40's had feed issues when using on 357sig . I saw several video's on that matter . Some taken right at the range .
 
I have yet to experience any , any feed issues with both of my firearms , Sig P320 and the MP 40 conversion . I have seen that when converting glocks from 40 to 357 that the mag for glock 40's had feed issues when using on 357sig . I saw several video's on that matter . Some taken right at the range .

One of the things I like about the 357 sig is feeding a 9mm bullet into a 10mm chamber.
 
One of the things I like about the 357 sig is feeding a 9mm bullet into a 10mm chamber.

10mm is a .40 bullet, you doing this? Serious question.

The .357 Sig is a .40 S&W necked down to 9mm
also know as a bottle neck round.
 
10mm is a .40 bullet, you doing this? Serious question.

The .357 Sig is a .40 S&W necked down to 9mm
also know as a bottle neck round.

The 357 SIG uses a 9mm bullet. The chamber is 10mm (or 40 cal, if you prefer). So the 9mm bullet has that large, roomy 10mm chamber as it loads. I'm thinking it's pretty unlikely to jam.
 
OK, you're referring to the bottle neck design I mentioned.

The 10mm chamber is longer then a .40 which the .357
is based. The throat is still 9mm, where the case head seats.
 
For practice ammo I buy exclusively from Blacked Out Arms LLC, bulk quantities. The price is the best and quality 100%.
Blacked Out Arms LLC: Home

For self-defense I like Cor Bon and Hornady, and have found the Sig ammo to be the most accurate, not to mention full-power.

I gave up trying to reload 357Sig and just sell the brass back to Blacked Out Arms.

I've had Sig 229s since they were first available in the U.S., and then the P239. I've purchased 357Sig barrels for Berettas and Sig 226 guns. Basically, if I had a .40S&W gun I fitted a 357Sig barrel to it.

I bought three LEO turn-in M&P357Sigs to back up my original purchase.

I do think 9mm ammo has made significant advances in the past 20 years and may have obviated the advantage of 357Sig. However, I am long accustomed to the round and will likely shoot it until I can no more.
sdh
 
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