.357 mag V the .357 sig

trooperchin

I know what a .357 mag is but what is the .357 sig??

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IAMACLONE_2

remington ballistics
357sig 125gr jhp muzzle=1350 50yds=1157fps energy muzzle=506 50yd=372

357mag 125gr sjhp muzzle=1450 50yds=1240fps energy muzzle=583 50yd=427ftlbs

i own a s/w626 4" & baretta 9357 cougar

the 357mag vs the 357sig. the mag wins!,BUT for carry the sig wins!
wounds are supposed to be about the same, from what i have found.
the cougar holds 10rds, the s/w 6rds, my boss has a 357sig h&k 12rds
the cougar is lighter & shorter, the hk is heavy & big, the s/w bulky

my favorite is a springfield 1911a1 .45cal

so, that was a lot of help..later

CS8161

They developed the cartridge by necking down a 40 S&W case to 35 caliber.

Chris8161
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LannyFP

The 357 sig is a 40S&W case necked down to 9mm. I have a S &W 66 with 4" bbl & a Glock 31 -- over a chrony the sig is faster with less divation BUT there are a pain to reload.

Iconoclast

I have one of the prototype rounds out of the Exeter, NH, plant, where much of the work was done. Dimensions are slightly different than the final design. I suspect they simply enlarged it a tad to make it fully compatible with the existing tooling / design of the .40 S&W. They are both good rounds. I use a .357 Sig barrel in my .40 Glock. I do love that M66 in .357, though. But as IamC said, the wheelgun is really too bulky for concealed carry.

mballai

The 357 SIG is a very clever marketing gimmick to help boost gun sales--it's supposed to be a more user friendly alternative to those who want 357 mag performance. Ballistics are roughly 40 S&W, so it's a good caliber for self defense. But the need for it from a user standpoint is non-existent. Buy a 40 S&W, the ammo on the SIG is overpriced and a pain to reload. Or shoot a real 357 mag.



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JustC

wound channels are close to the same. When you can create close to equal performance, with less powder, in a smaller cartridge, and hold more rounds at the same time, you have invented a significant round. the 357 sig is extremely accurate in semi-autos, due to it's velocity versus it's size/weight. Many pistol competitors are using it now. I shot the best groups I ever have, the first day I shot mine.

Is it difficult to load? not once you get the dies set right. It takes a little more finesse with necked cartridges than that of a straight wall. Find the loading data for it, by Speer if you can. Check out it's muzzle velocity and energy for a bullet only weighing 125gr, it is impressive. I for one will continue to buy guns chambered for the little giant.

A great rifle with a junk scope,....is junk.

Nighthawk

The .357 sig was introduced to copy the ballistics of the old 357mag 125 grain one shot man stopper.Over a ten year study conducted by the FBI the .357 mag had a 97% one shot stop rate when hit anywhere in the torso,to stop the perpetrator from doing whatever he was doing and run less than three steps.When Police chiefs decided to adopt the semi auto hand gun many older officers did not want to give up there legendary .357mag Revolvers.So everybody tried to invent a cartridge to duplicate the ballistics of the 125gr .357 magnum. They came very close with the .40 auto with a 155gr bullet.Now the 135gr bullet duplicates the legendary .357mag 125gr bullet. The 357 sig is a .40 hull necked down to .35 caliber.The ballistics exceeded that of the 357 magnum.And there have now been enough police involved shootings that the sig cartridge is sweeping the law enforcement community by storm. Officers are saying the sig works better than any cartridge ever,on felons and pit bulls as well.Our Dept.recieved the FBIs top ten one shot fight stoppers. And I must say it was interesting at least.Some calibers were on there twice with different ammo.But the statistics are expected to change as the new sig cartridge becomes more and more popular.

Rugster

austin247

Our dept. just received new stats on one-shot stoppers. According to the info we got, so far the .357 SIG has a 100% one-shot stop rate. The stats also went on to say that there has been a 100% fatality rate. I've used this round for four years and can't see myself using anything else.

mballai

The "one-shot stop" is very nice statistically, but very dangerous to adopt tactically. I would suggest that a high percentage rate of one shot stops has less to do with caliber and more to do with shot placement accuracy. It's easier to shoot a 357 SIG than a 357 Mag and shooting proficiency with a semi-auto is probably going to be higher due to a number of factors, not the least of which is that one is liable to shoot more and longer with less punishing 10+ round SIG mag loads than 6-7 shot speedloaders.

My gripe with the 357 SIG is that there's no real difference in performance versus the 40 S&W.

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White347LX

quote:
My gripe with the 357 SIG is that there's no real difference in performance versus the 40 S&W.

Really? Not even in bullet drop over a distance? I'm looking at buying a handgun, probably a Springfield XD, in either caliber and am looking for differences to point me one way or the other. Which one would shoot flatter out to 50 yards or so? Is there anyplace I can find some more information comparing the two?