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How to choose between 9mm weights?

Discussion in 'Caliber Corner' started by MplsPete, Feb 16, 2011.

  1. MplsPete

    MplsPete

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    Sorry for the total newb question...

    Bought a Glock 17 recently as my first handgun. When I checked out 9mm ammo to purchase, I see weights from 115g to 147g+. Why would one buy a heavier ammo over another? Why would you buy one weight over the other? Thanks in advance
     
  2. Whitey1

    Whitey1 Large Member

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    Fat bullets need love too.

    :supergrin:
     

  3. deathpriest

    deathpriest

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    The way I see it, the heavier bullets would hit harder at close range. More mass hit harder.
     
  4. Philippe

    Philippe

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    May i ask what this fine firearm is being used for, that can help point us in the right direction in order to help you pick out some quality ammo.
     
  5. MplsPete

    MplsPete

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    In general, home defense. I also plan on quite a bit of fun time at the range with this being my first firearm.
     
  6. G23c

    G23c

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    go big, mo better.
     
  7. Foxtrotx1

    Foxtrotx1

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    All weights of 9mm have their virtues. The 147's tend to get more penetration. However, A 115 +P+ load can realllllly open up and dump it's energy fast. However, there is a great debate as to whether or not the amount of energy (joules or Ft/lbs) actually matters on handgun wounds. As long as you use a proven loading such as Speer Golddots, 9PBLE, Golden Saber, ect. You will not notice too much difference between weights. I doubt many people could tell them apart in a gel test without captions.

    Edit: Summary: Bullet Design seems to be far more influential than the weight in 9mm.
     
    Last edited: Feb 16, 2011
  8. collim1

    collim1 Shower Time!

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    I personally dont think it matters as much as it used to. I like to keep several boxes of SD ammo stored away.

    I buy whatever is on sale for a good deal. Winchester Ranger, Federal HST, and Speer Gold Dot are all excellent choices. I dont prefer +P myself, but in a full size gun like the G17 you prolly wouldn't notice the extra recoil as much.

    My preferred load is the Gold Dot 147g. But I bought a 50rd of HST 124g for $16.99 today. I thought that was too good of a deal to pass up.
     
  9. RWBlue

    RWBlue Mr. CISSP, CISA CLM

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    Assuming you are buying premium ammunition, for the most part it doesn't matter. They are all designed for the FBI tests.

    Now, if you are really into this.....
    1. Some guns are more accurate with one weight than others.
    2. Some guns are more accurate with one brand of ammo than others.
    3. Some people say they can feel the different weights. The recoil is suppose to be sharper on light bullets and more intense on heavy bullets. I personally can not feel the difference in recoil with 9mm loads. In 45ACP/Super, I can.
    4. If you have/get a suppressor, you want subsonic rounds (145/152gr bullets).
    5. Most plinking ammo is 115gr, so.....
     
  10. rjrivero

    rjrivero

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    THIS should be #1....The rest, while accurate, is minutia. :supergrin:
     
  11. Glolt20-91

    Glolt20-91

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  12. RWBlue

    RWBlue Mr. CISSP, CISA CLM

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  13. Glolt20-91

    Glolt20-91

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    A 124gr XTP +P+ wouldn't be that much slower than their .357SIG XTP, IME :dunno:

    Bob :cowboy:
     
  14. cole

    cole Millennium Member

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    I'll take aggregate deeper and more consistent penetration over expansion. So, I choose 147gr HP.
     
  15. Snowman92D

    Snowman92D

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    I learned long ago to stay away from 147-grain 9mm loads. I never saw the sense of taking a perfectly good 9mm cartridge and downloading it to the level of a really good .38 Special +P.
     
  16. triggerjerk

    triggerjerk

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  17. RWBlue

    RWBlue Mr. CISSP, CISA CLM

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    If you hang out in reloading rooms you will hear people who claim that they can get the 9mm up to 357sig speeds. Personally, I have not tried it.
     
  18. ithaca_deerslayer

    ithaca_deerslayer

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    Good post, but you forgot the most important criteria!

    A. Some guns cycle better with certain weights/brands ammo than with other ammo.

    After that criteria is satisfied, then move on to concerns 1 through 5 :)
     
    Last edited: Feb 17, 2011
  19. cowboy1964

    cowboy1964

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    Higher velocity hits harder too.

    I prefer mid-weight simply to keep muzzle energy high.
     
  20. GunFighter45ACP

    GunFighter45ACP

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    Shoot 'em all & stick w/whichever weight you do your best work with.