Will 10mm Stop a Bear?

Discussion in 'Firearm Related' started by Nemo, Nov 29, 2019.

  1. Nemo

    Nemo Man of Myth and Legend

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    Seems a 10mm lover or 2 around here. I suspect a yes it will or 2 prior to any further reading.

    Nemo*

    *yes a bit of a sale attempt but decent 3 minute read


    https://www.thearmorylife.com/will-10mm-stop-a-bear/


     
  2. awanatech

    awanatech Well-Known Member

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    I was just reading more about this tonight. I've looked at getting a 10mm for a while, one reason actually was for when I'm in bear country. We spend a good but of time hiking and camping in the N. GA. and eastern TN mountains. I believe the 10mm would be sufficient in black bear country. I would likely want something different in brown bear country though. The Springfield XD-M 10mm is what I've been looking at. I've considered it with a 5.25" barrel.
     

  3. gunsmoker

    gunsmoker Lawyer and Gun Activist

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    If I had to buy a handgun for hiking / backpacking in black bear country, I think I'd also choose a 10 mm semi-auto that holds 13-16 rounds in the magazine.

    However, since I already own a 6" barreled stainless stee .357 magnum wheelgun, I'll carry that instead. I'm not happy with the low ammo capacity of 6 rounds for self-defense against a pack of feral humans, but against a single bear I think 6 will be enough to determine a winner of that encounter.

    I use a factory load that has a 158 gr. bullet, and the advertised velocity is 1550 feet per second, but that CANNOT be out of a normal-length revolver barrel. It's probably a figure generated by testing the load through a break-barrel single shot pistol like the T/C Contender with a 10" or 14" barrel.

    I expect my 6" revolver would push a good stout factory load, 158 gr. JHP bullet, at about 1300 fps, which would give me roughly 600 foot-lbs. energy.


    P.S. If you used a 10mm pistol with a 4.5" to 5.0" barrel that pushed a 180 grain bullet at 1225 f.p.s. (that would probably have to be a load from Buffalo Bore, Cor-Bon, or Underwood -- companies known to load 'em hot and to maximum pressures) you'd also be looking at the same kinetic energy on target: 600 ft. / lbs.
     
  4. vic40204

    vic40204 New Member

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    I would think yes.
     
  5. Malum Prohibitum

    Malum Prohibitum Moderator Staff Member

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    My self defense everyday carry round (literally carried as I write this post) is a 200 grain Hornady XTP loaded by Underwood. 1250 fps out of a Glock 20. Just under 700 lb ft. (694).

    https://www.underwoodammo.com/produ...-jacketed-hollow-point?variant=18785724858425
     
  6. Malum Prohibitum

    Malum Prohibitum Moderator Staff Member

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    Something to remember is that Hornady's XTP in 10mm is made for 10mm, not for .40 S&W. That means the engineers have a 10mm performance envelope in mind. Driving a .40 S&W bullet at 1250 fps or higher can have unanticipated consequences because it is outside of the parameters the engineers used to design certain performance characteristics (e.g., expansion, weight retention, retaining the jacket bonded to the core, &c.).
     
  7. mrhutch

    mrhutch Well-Known Member

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    Danish special forces training in the artic are issued 10 mm glock 20s because of polar bears.

    Not my first choice against a 10 foot apex predator, but if it's good enough for them vs polar bears it will do just fine vs Georgia black bears.
     
  8. Wegahe

    Wegahe NRA Instructor

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    I have see jacket separation in both the Hornady XTP 10mm and the Hornady (Critical Defense?) .40...
    Can't remember if it was the CD or something else...

    Fire a shot at a paper target and get several holes instead of just one.
     
  9. Phil1979

    Phil1979 Member Georgia Carry

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    In bear country I'd want Leighigh (spelling?) Penetrator from Underwood Ammo.

    I don't have a 10mm yet, but .45 Super in my K-2 with the solid copper screwdriver bits wouldn't be anything to sneeze at.
     
  10. AzB

    AzB Well-Known Member

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  11. Malum Prohibitum

    Malum Prohibitum Moderator Staff Member

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    :shock:
     
  12. Malum Prohibitum

    Malum Prohibitum Moderator Staff Member

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    "No separation in the three full boxes that's went down range". Comment from buyer on Midway's site for Underwood's 155 grain loading of Hornady XTP (1500+ fps out of a Glock 40)

    https://www.midwayusa.com/product/1019459282

    I'll keep looking, though. Since this is my carry ammunition, it is important.
     
  13. Malum Prohibitum

    Malum Prohibitum Moderator Staff Member

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  14. Wegahe

    Wegahe NRA Instructor

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    I suppose I should have made a record of the batch numbers for a record but I was with a student when the problems happened. It was not every shot that produced multiple holes in the target. Maybe only 15 out of the 20. I also didn't count the failures.
     
  15. moe mensale

    moe mensale Well-Known Member

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    So it's like a short barrelled shotgun? :shock:
     
  16. Malum Prohibitum

    Malum Prohibitum Moderator Staff Member

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    I didn't realize this was personal experience. How long ago? What velocity?
     
  17. Wegahe

    Wegahe NRA Instructor

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    Just a couple of months ago. The target was set at 7 yards. I don't know the loading or the velocity other than it was factory new ammo. I also did not check the firearm for defects. The Magtech FMJ did not present the problem.
     
  18. Malum Prohibitum

    Malum Prohibitum Moderator Staff Member

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    By factory new, do you mean Hornady? I wonder if it was a defective box. 15 out of 20 is a lot. I have not seen multiple holes in the target with the Underwood loadings, and they are significantly hotter than the Hornady loads. Did you contact Hornady to make them aware of this?
     
  19. Wegahe

    Wegahe NRA Instructor

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