Underwood 357sig Under Rated Velocity

Discussion in 'Caliber Corner' started by Pilot172, Dec 11, 2019.

  1. Railsplitter

    Railsplitter

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    Even if someone takes a direct hit to the heart they can still fight long enough to empty a mag on you. "Crushing" an organ or two will eventually kill someone AFTER the fight is over. My statement about ending a fight quickly still stands!
     
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  2. Ridgerunner665

    Ridgerunner665

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    I want no part of this argument... just want to say that the 135 grain 357 Sig Hornady Critical Duty ammo isn't as weak as has been said here.

    It is true... Hornady 357 Sig is nothing more than hot 9mm +P+... that said, those Flex Lock bullets perform exactly as advertised at that velocity (~ 1,200 fps).

    They are by far the most consistent 357 Sig ammo I've ever chrono'd... nothing else even comes close... Extreme spreads of 15 to 25 fps in every test I have conducted myself, and several others available on YouTube.

    From my stock Glock 32... they average 1,205 fps and are very accurate and easy to shoot fast.

    Hornady Critical Duty isn't the hottest 357 Sig load available.... it was never intended to be.... but it is a very good load nonetheless....its purpose is hard barrier penetration.... and it does that extremely well.

    Better than any other expanding bullet on the market.



    Sent from my SM-G960U using Tapatalk
     
    Last edited: Jan 24, 2020

  3. fredj338

    fredj338

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    So you honestly believe that a hit anywhere with a 357sig is better than a heart shot or two with a 9mm? That is truly misguided thinking that is likely to get you really killed dead in a fight.
     
  4. fredj338

    fredj338

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    Less "energy dump", haven't you been paying attention?:drowning:
     
  5. Ridgerunner665

    Ridgerunner665

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    Energy isn't how I grade my carry ammo...or my hunting ammo.... or even my range ammo.


    Sent from my SM-G960U using Tapatalk
     
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  6. fastbolt

    fastbolt

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    Perhaps he's not familiar with the details of the Ofc Stacy Lim shooting many years ago, where she took a close contact shot (approx 5ft) in her chest with a .357MAG before she could get her issued Beretta 9mm into action. She was off-duty at the time, wearing light civilian clothing. No vest. (She then fired 4 rapid and accurate shots from her 9mm that ended the threat.) Nobody told her she was supposed to give up when being hit by a .357MAG. ;)
     
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  7. George Kaplan

    George Kaplan emeritus

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    But he has a great view of it out mommy's basement window.
     
  8. George Kaplan

    George Kaplan emeritus

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    Must not have been on YouTube. That or Hickok45 (or whatever his name is) would have to have shot her for him to know about that shooting. Besides, we all know the .357 Magnum does not have, "balanced ballistic performance".
     
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  9. fastbolt

    fastbolt

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    Having worked in the days of the last hurrah decade of service revolvers, and having learned of OIS incidents where cops (or suspects) had used various Magnum revolvers in shootings (.357, .41 & .44) ... it kinda took the wind out of the sails of being a Magnum handgun enthusiast.

    Sure, still arguably preferable to the relatively anemic (by Magnum standards) 9mm & .38SPL offerings of the days, but not the mythical dragon-slayer calibers some modern proponents seemed happy to use to eulogize the calibers (or their modern namesakes).

    I still like my .357's and .44's, comes to that, sure, and even my handloaded .45Colt, but I've seen them in a much different light since the 90's were underway. Nostalgia for medium & big bore revolvers? Of course. I enjoyed the handloading days of the romp'em, stomp'em Ruger-Only big bore sections in some reloading manuals.
     
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  10. 0311INF

    0311INF

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    The SD barrel is perforated or "comped" within the surrounding integral suppressor. It purposefully bleeds off velocity of standard pressure 9mm to keep it subsonic.
     
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  11. fredj338

    fredj338

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    Since that isn't possible for every vel level, maybe a chronograph? If you fire supersonic ammo thru a suppressor, it doe NOT reduce it to subsonic. Why they make subsonic ammo after all.
    Besides, look at the other video, unsurpressed G18 mag dump, 1000s of # of ME striking almost instantly, no gel explosion, gel dummy is not knocked down, why, because the mass absorbs what little shock wave there is. I wish there was an energy dump, but I know better, I actually have shot large things with more energy than is available in any handgun, there is never an energy dump indicated, just vitals damaged or not. Guys that revel in gel porn shots on small blocks of gel should get out more.
     
  12. 0311INF

    0311INF

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    I'm not arguing the energy dump thing. I'm just trying to seem smart by correcting you on the MP5SD. :cool:
     
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  13. hivel9mm

    hivel9mm

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    There have been several posters on the HK board who have chrono'd the MP5SD. There is one who compared it with the MP5K and the muzzle velocities coming out of the longer (but perforated) barrel were approximately 20% less than those coming out of the shorter MP5K.
     
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  14. Railsplitter

    Railsplitter

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    Sorry you feel that way, you know how much I value your opinion.
     
  15. Railsplitter

    Railsplitter

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    Oh my! Your not saying Fred the all knowing expert was wrong are you?
     
  16. Railsplitter

    Railsplitter

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    2000 ft/lbs of energy? Lol How do you get 2000 ft/lbs of energy from a 135gr 9mm round that does good to get 300 ft/lbs of energy? Not even as much energy as a 147gr 9mm! Dude get a grip!
     
  17. 0311INF

    0311INF

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    Fred is a good guy. I learned early on to shut up and listen to folks who have done things and have extensive knowledge about those things due to that experience. We can't get through life knowing everything at the end nor should we try. Even if he's a 9mm fanatic, which I dont think he is, its all good.
    The body of knowledge, especially the physics, covering terminal ballistics is rather hard to comprehend in entirety...and I dont think its nearly complete. Its seems to me, given its 35 year history of scientific research-and numerous resultant caliber and firearm adoptions-quite likely that the FBI isn't correct about everything it espouses. Nor thereby are the ammo companies necessarily correct by building cartridges specifically to the FBI's proper performance metric.
    Energy is a metric too. The more the better IMO.
     
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  18. Railsplitter

    Railsplitter

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    Actually it wasn't the 357 Sig 135gr round that was tested it was the mouse fart Hornady 135gr 9mm round that was fired into the gel man! Even then the rounds all over penetrated the gel taking what little energy they had out with them leaving very little impact in the gel.

    Maybe next time the guy can use a 10 inch barrel 357 Sig loaded with Underwood and see what happens to the gel man!
     
  19. Railsplitter

    Railsplitter

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    Energy is indeed a metric, without it lead would just be used as a paper weight.
     
  20. amd65

    amd65

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    Too bad they didn’t capture any of those 135gn Hornady’s...the tracks didn’t look like they expanded much. They should have used Paul Herrell’s new, improved, high-tech fleece bulletstop.