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357 sig / .40 is one any better?

Discussion in 'Caliber Corner' started by 1canvas, Aug 27, 2010.

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  1. when comparing the two is one really much better than the other? i know there are many loadings so i would look at two Gold Dot loads as posted by the company. the 165grn at 1150 compared to the 357sig LE at 1375. i put in the .40 165grn load cause its penetration might be more comparable with its sectional density.
  2. KAK


    Aug 20, 2010
    Waco Texas
    40 is probably better for close quarters last ditch defense.

    357 would probably be better for barrier penetration.

    Think of scenarios you could see yourself in and pick your favorite.

  3. fredj338


    Dec 22, 2004
    I would say diff, not really better. As far as SD, the 40/155gr load is a closer equiv & field perf seems to support that (if you believe M&S data). I find the recoil of the 357sig shows less "torque" than the hot 40s.
  4. tx787


    Feb 11, 2010
    357 Sig is better assuming you don't have issues with ammo availability in that caliber.
  5. atl-g33

    atl-g33 Lifetime Member

    Aug 1, 2010
    Atlanta, GA
    just got back from shooting my p226 in both calibers. I prefer the .357 sig. I like the lighter bullet / more speed combo personally. Recoil is a little less as well. Plenty of other threads on the .357 sig describing its ballistics.
  6. fredj338


    Dec 22, 2004
    Really, I don't see how. The 125gr/357sig @ 1350fps is almost identical to 155gr/40 @ 1250fps. I doubt you could look at a body or gel impact & tell the diff. The SD are the same, so same bullet designs, sim performance. The 125gr is a bit faster but the 40 hits w/ a bit larger frontal impact.:dunno: I prefer the 357sig because the recoil impulse has less torwue, makes followup shots just a bit quicker in identical guns.
    Last edited: Aug 27, 2010
  7. I personally trust .357SIG slightly better stopping power wise (I use it as my off-duty bad area gun), but .40 is also a good round and is slightly easier when searching for ammo.

    Either way you are making a good choice.
  8. M&P Shooter

    M&P Shooter Metal Member

    Jul 19, 2009
    Phila, PA
    The .40cal is a good compromise for those who like the 45acp but want higher capacity. The .40cal makes a nice wound cavity with 165gr loads like HST, Rem GS, Speer GD, Winchester Elite Supreme, ect

    The .357 sig is great for punching through hard barriers like auto glass, doors, walls but so is a 180gr .40cal bonded bullet. Both rounds are awesome service calibers and most weapons like Glock/Sig/XD/M&P you can get a after market barrel and fire both with the same mags since a 357sig is basically a .40 case necked down with a .355 head mounted on it:wavey:
  9. _The_Shadow

    _The_Shadow Ret. Fireman

    Jul 23, 2007
    Southeast, LoUiSiAna
    One probably not too much better than the other, but I happen to like the 10mm and the 9x25Dillon...
    Last edited: Aug 30, 2010
  10. thegriz18

    thegriz18 Paper Killer

    Jun 17, 2007
    Friend Zone
    I think I might pick up a 357 barrel for my G23. The mags are the same, correct?
    Last edited: Aug 30, 2010
  11. correct, the mags are more or less the same, a G23 mag will work perfectly fine.
  12. blackbmw


    Aug 29, 2008
    st. louis
    First off, My rounds move out at 1500fps or more, Im using .357 sig 125gr buffalo bore GD. I chronoed these at 1565 fps out of my G31, thats a little difference from a 1250fps 155gr load. I want fast and semi light, emulate a rifle round type of speed, cause a 30-06 is much more deadly that a 30 carbine, yet same size round.
  13. I don't think one's better then the other. They're both great rounds. I have a G22 and bought a G31 barrel for it. I have a lot of time using the 357 Sig., but a lot more with the 40 S&W.

    To me the 357 Sig. has more recoil and muzzle flip. However, it does both A LOT quicker then the 40 S&W. And to me, the faster slide speed, especially the slide speed going forward returning it to battery, helps drop the front of the pistol back down on target quicker allowing for faster follow up shots.

    The 40 S&W recoils and muzzle flips a little less then the 357Sig., but does both slower. The muzzle flip on the 40 S&W is more torquey the the 357 Sig. and has a slower slide speed so it doesn't seem to aid in dropping the front site back on target as fast as the 357 Sig.

    I can shoot both very well. The 357 Sig. in my set up is a little more accurate. I was surprised how accurate it is. I was buying 50 round boxes of 125 gr. Speer Gold Dot's for $15 a box. That price has long been gone. I have one box left.

    I haven't used the 357 Sig. barrel in about two years. It's hard to find cheap practice ammo locally for it. This is the time of year I start getting back into shooting so I'll be buying ammo online so I'll more then likely buy some Sig ammo.
  14. jimeradams


    Jul 31, 2010
    One of my buddies has a Sig 229 .40 that he bought a .357 Sig barrel for. I've shot his 229 with both types of ammo and don't think you go wrong with either caliber, with proper ammo selection. I do think that with the .357 Sig barrel in, his 229 becomes a "plugs and muffs" gun! It's that loud, coming out of that short 3.9" barrel.
  15. after checking BB balistics from their website i could not find these speeds for the 357sig.
  16. GunFighter45ACP


    Jun 11, 2005
    D/FW, TX
    I shoot better groupings w/.357sig than I do w/.40sw & my times back on target are also better, too, so all things being equal, .357sig is a better choice for me.

    If I factor in cost & availability of ammo though, I find that .40sw is a better choice for me.

  17. atl-g33

    atl-g33 Lifetime Member

    Aug 1, 2010
    Atlanta, GA
    You should hear it coming out of a g33, talk about plugs and muffs required.
  18. 2afreedom


    May 6, 2007
    The South
    I don't know which is "better" but the .40 wins for me because of ammo price and availability. I would feel well-armed with either caliber.
  19. AWESOMO 4000

    AWESOMO 4000

    Dec 7, 2008
    My buddy has shot maybe one before in his life with me about 10 years ago. He called the other day, wanted to try shooting again, thinking about getting a gun - his wife WANTS him to. Lucky guy...

    Anyway, I let him shoot my P229 in .357SIG and my M92FS Beretta. He liked the SIG better, had no objections to the sound or "recoil".

    I set a pop can out at 50 yards and nailed it on my first shot. Stood it back up, let him take a crack at it. Hit on the 2nd shot.

    3.86" barrel with both a first timer and me who has been shooting for 25 years is dead on accurate a 50 yards with a service pistol and FMJ ammo. The .357 SIG is inherently accurate, has a proven record, and comes in one flavor: 125gr. I am a proponent of using a round that was designed for originally, and guns typically work best in that caliber.

    You can find 147gr in .357SIG but it is rare - because it isn't all that great.

    Never been a big .40 fan. I traded off my P226 in .40 the first year they were available. Sold it after 8 months, bought my Beretta a few months later. Not a real fan of the cartridge. If you want a bigger bullet, I'd just get a .45 ACP and have it over with. Otherwise, 9mm and .357SIG are probably good enough.
  20. BOGE

    BOGE Millennium Member

    Mar 21, 1999

    1565!!!??? :shocked: Not THAT is impressive!!
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