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Featured 10mm vs 357 sig for self defense

Discussion in 'Caliber Corner' started by grmeyers, May 14, 2017.

  1. grmeyers

    grmeyers

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    I am considering a Glock 29 or 32 for a new self defense gun. I own many 9mm and 45 acp in various xdms, xd mod 2's and xds's. I just recently fell back in love with Glocks when I purchased the Glock 20 then came the 21 and last but not least the 19. I like the ease of up- grading them like replacing the plastic sights with trijicon HD'S and the never ending aftermarket accessories available. I was curious between the 10mm and .357 sig which one would be considered the best for self-defense. Most of the 10mm ballistic reviews seen to indicate over penetration and the hollow point bullet fragmenting or it is recommended for hunting or a woods gun. Any input wild be very much appreciated.
     
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  2. pikepole20

    pikepole20

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    The .357 Sig basically duplicates the ballistics of a .357 magnum. The 10mm comes close to 41 magnum performance with some loads. The 10mm is more versatile in the variety of loads available. There is a 135 grain load in 10mm that should limit over penetration if that is a concern. You can always purchase a conversion barrel for the 10mm and have .357 Sig too. I have a Glock 20 and like it. I can shoot 40 caliber in it also. The 357 Sig is a great round also, but I don't think it can do anything 10mm can do just as good or better.

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  3. GLOCKisgood17

    GLOCKisgood17

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    10 MM is the way to go. Not ALL loads over penetrate. You have to research to see what works best in YOUR pistol
     
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  4. WeeWilly

    WeeWilly

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    I love my 10mm guns, but if you are going to be carrying the gun and don't think regular service calibers are sufficient, the 357 SIG is hard to beat. It carries like a 40S&W gun, but comes with a lot of pop.

    If you are talking night stand kind of SD, I would stick with a G20, you can run mild to wild and the hotter stuff hits like a hammer.
     
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  5. TGT

    TGT Do you want to see my little friend?

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    You need to consider whether the carry size dimension will make a difference; The 32 is a higher pistol, and longer in length too then the 29, but the 32 is slimmer. I only carry IWB, and so for me the baby Glock 33 is all I would consider. But if I had to jump up in size, I'd simply go for the more powerful gun. The 32 has been tested to fire aprox 1,325FPS out of a 4" barrel. (not always the advertised 1,400FPS.) Thus, I really don't see a huge difference between a 115gr 9mm+P doing 1,200FPS, or a 125gr 357Sig doing 1,325. (they're both .355 bullets) Yes, the 357Sig is better then the 9mm+P, but to me, not a great difference if the Sig isn't doing at least 200FPS better then the 9mm. With a 10mm Underwood round, we are talking about 180gr bullet doing 1325FPS out of a 4.6" barrel. Even with your shorter 29 barrel doing 75fps less at say 1,250 fps, that's still a huge difference in energy.
     
  6. dukemason

    dukemason

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    I don't have a 10mm yet. But I do have a P320 in 357 Sig that I recently started carrying. If it's purely for self defense/carry, my choice would be 357 Sig. If only because I can get Federal HST's, Winchester PDX1, Ranger T's, Remington Golden Saber Bonded, and Speer Gold Dots for defensive ammo. Since some law enforcement agencies use 357 Sig, there's some great loads available from the big companies, if that matters to you. The P320c and Glock 32 both carry 14 rounds of 357 Sig in a 9mm size platform.
     
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  7. pikepole20

    pikepole20

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    Underwood has some lighter bullet weights such as a 135 grain nosler HP at 1600 fps and a 115 grain load at 1700 fps that are something to consider as well. I have shot the 135's before and they are stout but recoil is very manageable. How you are going to carry is the big issue as is the total size of the gun. The 10mm also offers the option of buying a barrel and having 357 Sig as well. No mags to buy just drop it in and shoot.

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  8. quantico

    quantico 1911 lover Millennium Member

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    I carry both often. I prefer the 10 mm because it has more bullet width and weight than essentially a super fast 9mm.

    They both offer good penetration and expansion. I would go ten mm if you are comfy with the pistol size.
     
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  9. Handy

    Handy

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    The primary problem with 10mm is that it is not considered a "duty" caliber by the big ammo companies any more, so it doesn't receive the cutting edge bullet technology that 9, .357, .40 and .45 do.

    Underwood I believe uses higher end bullets, but ones built for .40 velocities.

    However, I don't know how much longer .357 Sig is going to be supported, either.

    Otherwise, 10mm is a cool cartridge for a reloader and I trust Glock's 10mm platforms more than the .357/.40 guns. The 10mm guns are built for the recoil.
     
  10. Bilrus61

    Bilrus61

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    Can a 10mm owner that also owns a chronograph check the velocity on some common factory loads? I know my G32 puts out about 525 foot pounds. Would like to know what kind of real world energy the 10mm puts out over a chrony.
     
  11. Phelen_Kell

    Phelen_Kell

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    357sig will be around awhile (just like 10mm). There is still support for 357. USSS and FAMS still use it.
     
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  12. uhlawpup

    uhlawpup Gentle Soul

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    I had a 29. Too much bang for the platform. I have a 33 now, and it's just right. Plenty of bang, but easy to control or conceal.

    The 32 would be even easier to control, but a tad harder to conceal.
     
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  13. Handy

    Handy

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    Even with .40 level loads? Just curious.
     
  14. oldman11

    oldman11

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    I have a G29 and a G33 (among others). The 29 is stronger, but they are both good weapons. It depends on your ability to control a strong caliber. And I'm an old guy.
     
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  15. Benchrst

    Benchrst

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    Strictly cartridge based? 10mm. Mild to wild and everything in between.

    I don't think 'cutting edge' bullet technology in regards to the 10 is a thing...

    If a 40 cal bullet is designed to penetrate and expand to (insert whatever) standards at 40 S&W velocities, then that's the velocity it should be loaded at in a 10. Not a bad thing, no over penetration, excellent stopping power.

    Now, if you need a bit more penetration, well, there's 200gr hardcast for that ;)
     
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  16. Bradley T

    Bradley T

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    Dude, just go 10mm. Bigger is always better when you are killing someone!
     
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  17. uhlawpup

    uhlawpup Gentle Soul

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    No, it would be fine with .40 level loads, but then all I would need is the 27, which is smaller and easier to conceal. For my money, the 33 is the best bang for the buck and size.
     
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  18. HEXE9

    HEXE9 Shootin' Fool

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    Both will do the job...if you do your part.
     
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  19. Bren

    Bren NRA Life Member

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    Either way I guess. I like 10mm and is carries a little more energy in common loads, but not enough to notice. One thing I noticed while looking at some ammo to compare the 2 - there isn't much 10mm ammo out there any more. Used to be as common as anything else, but Speer doesn't even list a 10mm gold dot. I guess that's why the state police here went to having ammunition custom made, before downgrading to the .40. (It was pretty cool - had their own nickel plated brass with "KSP - 10mm" as the head stamp).
     
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