New Underwood ammo a 65gr 357 Sig offering, velocity 2100 FPS!

Discussion in 'Caliber Corner' started by Railsplitter, Mar 10, 2017.

  1. -JCN-

    -JCN-

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    I shot the normal pressure XD out of the Ruger LCP Custom and G42 today...

    I got failure to feeds occasionally on the LCP.

    The G42 performance out of the normal pressure round was kind of sad.

    IMG_2918.JPG

    Only went through one block IMG_2919.JPG

    Bottom left is the XD. Right is the 9mm.
    IMG_2920.JPG

    Left to right: normal pressure XP, XTP+P, normal pressure XD, 9mm+P Gold Dot.
    IMG_2921.JPG
     
    Last edited: Sep 30, 2017
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  2. Railsplitter

    Railsplitter

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    View: https://youtu.be/pMuJAWCjtok
    The 10mm 115gr XD has about the same sectional density as the 90gr XD used in the 357 Sig. But the 357 90gr XD has a velocity of 1740 fps out of a 4.5 inch barrel like the gun used in this test. This is about 250 fps faster than the XD round that defeated this guys armor, impressive rounds. Also note these rounds were not loaded to the same velocity as UA.
     
    Last edited: Oct 1, 2017

  3. impetus maximus

    impetus maximus

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    would love to see someone take out a wild hog with one of these 64 gr Underwood rounds.
     
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  4. Railsplitter

    Railsplitter

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    I think the 65gr XD is better suited for deer and human anatomies. It could no doubt drop a hog with a good shot but there are better rounds for hogs, the 90gr XD for one.
     
  5. M 7

    M 7

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    The bullet penetration models that can be used to predict this sort of thing (penetration depth) say that a .355" 65-grain fluted flat nose bullet at 2,100 fps would penetrate-

    Schwartz Bullet Penetration Model l: 19.0''
    Schwartz Bullet Penetration Model ll: 20.8''
    McPherson Bullet Penetration Model: 17.9''

    -all of which come close to Underwood's claim of 18'' of penetration as given by Railsplitter in post #5. The real question is, "Does the damage being hyped by Underwood in gelatin tests of this round really equal the damage that this round will produce in soft tissue?"
     
    Last edited: Oct 16, 2017
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  6. Michaelk1950

    Michaelk1950

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    We need some hunters to put these rounds to a test this fall when deer season opens. :2gun:
     
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  7. Railsplitter

    Railsplitter

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    When a bullet hits you at 2100 fps design almost becomes secondary. Example the 5.56 round is designed to do nothing more than tumble through flesh. The 357 Sig XD doesn't have as much speed as a 5.56 but is a larger caliber round designed to be effective immediately upon entry and dumps more energy (640 ft/lbs) than the 125gr 357 Magnum. Size, design and speed combined in this round would no doubt prove effective.
     
    Last edited: Oct 14, 2017
  8. M 7

    M 7

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    I am sure that it will have an effect-as Michaelk1950 said above: "We need some hunters to put these rounds to a test this fall when deer season opens." That'd be the proof that I believe most folks would wanna see.
     
    Last edited: Oct 15, 2017
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  9. Nanuk

    Nanuk

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    A 55 grain 5.56 bullet is not designed to do that. It yaws, provided there is enough velocity in order to seek stability. An unintended consequence, not a design feature.
     
  10. Railsplitter

    Railsplitter

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    No matter if the 5.56 tumbles intentionally or not it's speed that makes the glorified .22 an effective weapon.
     
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  11. Chowser

    Chowser

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    I carry four spare mags on duty. I replaced one mag with the Underwood 1475 fmj. If I have to put a deer down, I will try and remember to use that ammo and report back.

    I recently did a class and you can tell that the Underwood ammo is loaded to the max. Guys were saying that when I was shooting through the windshield that dust was being blown out of the other windows. And only when I was shooting.
    You can also see the steel targets shake harder when I was shooting and I knocked a few over.

    The joke was if I missed someone, the muzzle blast would finish off the bad guy.
     
  12. Railsplitter

    Railsplitter

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    The psychological aspects of a gun fight or any SD situation certainly can't be dismissed as irrelevant. Hearing the blast of a gun firing that is aimed at you is no doubt unnerving. If the blast is relatively loud such as from a 357 Sig or magnum then the message is sent that a very powerful gun is firing at you causing stress levels to increase maybe to the point that fighting skills or desire to fight start to diminish.
     
    Last edited: Oct 20, 2017
  13. Kifaru

    Kifaru

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    Frivolous lawsuits do that to a company.
     
  14. BuckyP

    BuckyP Lifetime Member

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    Do you think the blast from a .357 is going to be more distinguishable than a 9mm while being fired at? Also, doesn’t auditory exclusion kick in sometimes? I’m not being rhetorical, these are actual questions I have. I hope to never find out first hand.
     
  15. Kifaru

    Kifaru

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    YES
     
  16. Railsplitter

    Railsplitter

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    It's all relative I suppose.
     
  17. Michaelk1950

    Michaelk1950

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    I suppose if you hit the right spot the BG will never hear it....just saying:highfive:
     
  18. Michaelk1950

    Michaelk1950

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    If anyone here deer hunts or pig hunts, and you use this round or similar XD/XP let us know the results. Probably the only way to tell for sure.
     
  19. Nanuk

    Nanuk

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    The times I have been shot at I was more concerned with seeing where they were at VS cover than what they were shooting at me.
     
  20. Railsplitter

    Railsplitter

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    And that would of course be the rational thing to do as priority one is to avoid getting shot. On the other hand the relative loudness of a round and any effect it would have on someone being shot at would be more of a subconscious effect such as instinctively increasing the fear or panic level caused by a louder and more threatening danger sound produced by a more powerful caliber. This increased anxiety level would certainly not be helpful if someone was in battle and needed to be able to maintain mental and physical skills.
     
    Last edited: Oct 27, 2017