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cor-bon 357 sig load

Discussion in 'Caliber Corner' started by 1canvas, Jan 5, 2012.


  1. 1canvas

    1canvas
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    i was looking at the corbon 125grn ballistics at 1425fps from a 4'' barrel, that pretty much duplicates the .357 magnum round. does anyone know what bullet they are useing?
     

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  2. dkf

    dkf
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    I'm pretty sure they are still using a traditional "old school" JHP which they may even produce in house. Expect some fragmentation of the bullet as well. Yeah basically an old school fragnasty 125gr .357mag replica in .357sig.

    http://www.brassfetcher.com/index_files/Page647.htm
     

  3. Goodspeed(TPF)

    Goodspeed(TPF)
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    Sierra Power Jacket. It's good to go.
     
  4. 1canvas

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    i just wonder why this load is not more popular. most posts i have read on this round talks about Gold Dot, HST, or Ranger.
     
  5. cowboy1964

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    Cost and street cred.
     
  6. dpadams6

    dpadams6
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    Because everyone nowadays want something that holds together. Some say that fragmentation was great back in the day, but holding together with deeper penetration is the ticket now. However, back in the day with that 357 mag 125 that fragmented nasty, it had one heck of a reputation that some say approached 96 % one shot stops. I'm a little confused at how some say that todays ammo that holds together is better than that. How in the world can you do much better than 96%.?
     
  7. dkf

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    If it would come in 50 round boxes for under $35 I would buy some. I'm not paying over $1 a round when I can get ammo just as good or better for far less $$$ per round.
     
  8. ABNAK

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    Cor Bon is indeed making their own bullets due to a supposed difficulty in getting Sierra's. It is a traditional cup-and-core bullet *similar* to the Sierras. I have some of these loads but haven't chrono'd them yet. However, I do have some of the Sierra loads they used to use and they clock at ~ 1400fps from a Glock 23 with a Storm Lake drop-in barrel.

    Yeah, these days it's all about holding together. I do believe, however, that there is indeed something of value with fragmentation at ~1400fps. It was a reliable old-school load so why not?
     
    #8 ABNAK, Jan 5, 2012
    Last edited: Jan 5, 2012
  9. 1canvas

    1canvas
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    well i have no issues at $1 a round for defense loads that may stop someone as quick as the old 125grn .357 mag load use to. i do carry HSTs and GD now and i'm o.k. with those. the corbon load was just a thought when i read the ballistics. if they are not using Sierrra bullets i would not concider them, i wouldn't have confidence in their in house made bullets. i use to use to load Sierra bullets for years for handgun hunting and had a lot of confidence in them.
     
  10. dkf

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    I have a couple pulled 125gr HST bullets. Once I get a chrono I want to load some up to get at least 1450fps out of my G32. I'm interested to see how they hold together.
     
    #10 dkf, Jan 5, 2012
    Last edited: Jan 5, 2012
  11. CDW4ME

    CDW4ME
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    I chronographed the Cor-Bon out of my 32 sometime in the past.
    Average for 5 shots was 1,380 fps / 528# KE; it was the hottest load I shot.
    Gold Dot averaged 1,334 fps from the same pistol.
     
  12. unit1069

    unit1069
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    I'm in the camp that doesn't want to pay $1/round when other proven .357sig premium self-defense JHP ammos are available at half the cost per round. Like Gold Dot, for example.
     
    #12 unit1069, Jan 7, 2012
    Last edited: Jan 7, 2012
  13. AWESOMO 4000

    AWESOMO 4000
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    This is my favorite .357SIG load for the fact that it most closely approaches the original formula for the .357SIG - the .357 Magnum 125gr load out of a 4" barrel. It is match grade accurate in my P229R - then again, so is anything from WW White Box, Lawman, or Georgia Arms FMJ.

    I have a box that I bought back in 2009 that uses the Sierra bullet. The current box I bought a month ago has a much wider more open hollowpoint that I believe to be their own design - kind of similar to the "flying ashtray" .45 design I guess is the best way to explain it. Haven't fired any yet, it's 20 degrees out.

    One thing I like about the CorBon loads, they have noticeably more pop than the other popular new fangled super bonded, best thing ever loads. Nothing objectionable at all -- just kind of like comparing a +P 9mm to regular 9mm. If the gun is a bit crudded up with mud, blood, or something else, a little extra slide velocity isn't going to hurt.

    Out of my G33 the Gold Dot did 1330, HST did 1280, Ranger T did 1300. Testing all four, the 125gr CorBon JHP expanded the widest, seemed to penetrate just as far as the GoldDot if not a bit more. It fragged a little bit, but whatever, that isn't necessarily a bad thing.

    For the .357SIG, the 125gr CorBon and Gold Dot are the way to go; can't go wrong with either one. From there I'd say Ranger T, then HST. HST has a good ball profile making it even more feed friendly with it's bottle neck design. Really any of the top 125gr .357SIG loads are great -- just have a slight preference for the CB loads.
     
  14. cowboy1964

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    If a round frags "a little" what's to stop it from fragging "a lot"?
     
  15. dpadams6

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    you are correct about the hst's. we have the glock 31's at work and had several problems with the gold dot and a little with ranger t's getting hung up. The hst's have been flawless....
     
  16. dkf

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    The HST chambers silky smooth in my Glocks. Too bad Federal has a halfed assed policy and I have a hard time getting it in .357sig. When you can find it the ammo is usually several years old.
     
  17. AWESOMO 4000

    AWESOMO 4000
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    Twoards the end of the tract - like 12" in after it's the size of a nickel - some lead flakes off. It went as deep if not a little deeper than Gold Dot from what I could see. HST looked like HST...the exact same, every time, no matter what you fire it into.
     
  18. chewybaca67

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    That's my line of thought too.
     
  19. CATATOMIC

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    I use to have some 125 gr Corbon form my 357 but I'm out. I have been wanting buy more. IMHO it's the best "fight stopper" in the caliber. If you want penetration get gold dots.
     
  20. Coffee Dog

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    Sir: I have been saying exactly what your quote says!
    Fragmentation made this round a legend--sooo how the
    heck can ammo makers ever top a legend?
    Human bodies haven't changed that drastically so
    a fragmenting round to me would stop someone as well
    as when this round established it's legendary status!
    :wavey: