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17 vs 19

Discussion in 'Reloading' started by attrapereves, Apr 20, 2014.

  1. attrapereves

    attrapereves

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    Has anyone chrono'd a Glock 17 and 19 using the same ammo? What about a 22 and 23? How much difference in velocity exists between the two?
     
  2. cysoto

    cysoto Gone Shooting!

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    The longer barrels produce about 15 to 20 fps more than their shorter counterpart. It's negligible.
     

  3. attrapereves

    attrapereves

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    Thanks for the info. I bet there is more of a difference between the 17/26, and 21/30.
     
  4. fredj338

    fredj338

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    All guns are diff, even those made the same day. Only way to know, chrono your own gun. Want to guess, 20-25fps per inch of bbl in handguns, 40-50fps per inch in rifle.
     
    Last edited: Apr 20, 2014
  5. frankmako

    frankmako

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    this is what i have seen in/between the g27/23/22 and g26/19/27.
     
  6. SDGlock23

    SDGlock23 Glockoholic

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    How much or little is gained or lost has more to do with just barrel length, such as the amount and type of powder used and the bullet weight. In general faster powders react less to barrel changes as do heavier bullets. Slower burning powders react more to barrel changes as do lighter weight bullets. However with factory ammo it's not uncommon to see anywhere from 20-50 fps gain in the extra .5" of barrel between models, not enough to make notable difference in performance really.
     
  7. AJE

    AJE Grumpy Old Man

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    19 v. 17 v. 34

    [​IMG]

    I should have brought out the 26 as well but I didn't think about it at the time.
     
  8. PEC-Memphis

    PEC-Memphis Scottish Member

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    Here's some data from a Diamondback DB9, G17, G34 with Remington 115 Gr FMJ:

    DB9: 1025, 1019, 1029, 1006, 1024, 1045: Avg-1025: SD-12.8: Vel Loss (G34)- 123

    G17: 1112, 1149, 1128, 1110, 1104, 1069: Avg-1112: SD-26.6: Vel Loss (G34)- 36

    G34: 1148, 1150, 1160, 1176, 1117, 1136: Avg-1148: SD-20.2: Vel Loss (G34)- 0
     
    Last edited: Apr 28, 2014
  9. J Lee

    J Lee Silver Member

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    Hickok45 actually did a YouTube Chrono test out of different lgth barrels. Not as big of difference as you might think.
     
  10. AJE

    AJE Grumpy Old Man

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    Here's another I forgot about... Power Pistol powder.
    [​IMG]