.45 ACP Velocity loss in 4" barrel???

Discussion in 'XD-45ACP Discussion Room' started by TexDeuce, Feb 5, 2011.

  1. TexDeuce

    TexDeuce XDTalk 100 Member

    Joined:
    Mar 28, 2009
    Messages:
    133
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Dallas, TX
    Ratings:
    +0 / 0
    I have the XD 45 Compact. Is there a big drop off in velocity with the 4" barrel compared to the standard 5" barrel? I know the .45 ACP is already a slow round and have heard of sub 800 FPS rounds in the 4" barrels. I don't want to use +p due to the added recoil. I use 230 grain Speer Gold Dots in my gun, anyone know what these chrono out of in the 4" XD's? Thanks.
     
  2. mistercoffee2

    mistercoffee2 XDTalk 100 Member

    Joined:
    Dec 9, 2010
    Messages:
    285
    Likes Received:
    0
    Trophy Points:
    0
    Ratings:
    +0 / 0
    Lots of info on "Ballistics by the Inch" that's fun to read but the below answers your question on barrel length.

    Can you imagine the drop off in a 4" V10 port?

    BBTI - 45 Auto
     
  3. tom_d

    tom_d XDTalk 15K Member

    Joined:
    Jun 30, 2009
    Messages:
    17,479
    Likes Received:
    0
    Trophy Points:
    36
    Location:
    West Texas
    Ratings:
    +0 / 0
    Interesting read. Thanks for the link.
     
  4. XD9Sub

    XD9Sub XDTalk 1K Member Founding Member

    Joined:
    Jan 2, 2003
    Messages:
    1,333
    Likes Received:
    1
    Trophy Points:
    0
    Location:
    Norcross, GA
    Ratings:
    +1 / 0
    Here is a study using a 3" barrel, Colt Defender. I would suspect velocities would be 50-75fps higher, using a 4" barrel.

    Looks like a standard pressure Winchester Ranger would be around 850-875fps in a 4" barrel.

    Some Short Barrel .45 ACP Velocities... - THR
     
  5. agalindo

    agalindo XDTalk 15K Member Founding Member

    Joined:
    Jun 25, 2004
    Messages:
    16,131
    Likes Received:
    25
    Trophy Points:
    0
    Location:
    Alpine Texas
    Ratings:
    +25 / 0
    You loose about 50 fps per inch. Quality HPs are made to expand and penetrate reliably between a certain velocity window in order to take into account 1" or 2" barrel difference.
     
  6. TexDeuce

    TexDeuce XDTalk 100 Member

    Joined:
    Mar 28, 2009
    Messages:
    133
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Dallas, TX
    Ratings:
    +0 / 0
    Thanks for the info. I still can't get the 4" barrel and slower velocity out of my head. Will you get enough penetration with the 4" barrel?
    Anyone have a chrono out of the XD?
     
  7. Dirty Rod

    Dirty Rod XDTalk 3K Member Founding Member

    Joined:
    Sep 3, 2008
    Messages:
    3,261
    Likes Received:
    0
    Trophy Points:
    36
    Location:
    Arizona
    Ratings:
    +2 / 0
    You will be fine. Think of all those folks/agencies/off duty LEOs out there carrying 3" and 4" Glocks, 1911s, XDs, etc. Lots of FBI and other agency statistics out there showing gel penetration of 16-19" out of a 4" barrel depending on the brand of ammo.

    Nothing to worry about.
     
  8. g26s239

    g26s239 XDTalk Member

    Joined:
    Mar 28, 2010
    Messages:
    60
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    PRK
    Ratings:
    +0 / 0
    I guess it's a personal thing with what makes you comfortable. I own a Glock 36, USPc45, and a Kimber Ultra CDP II and I have owned a Glock 30 and Sig P245. With the CDP II I use 185 grain Gold Dots or Critical Defense. With the others I never worried about using ang particular load. If you use 185 grain Gold Dots in the XD45 compact there should be no significant velocity loss.
     
  9. TexDeuce

    TexDeuce XDTalk 100 Member

    Joined:
    Mar 28, 2009
    Messages:
    133
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Dallas, TX
    Ratings:
    +0 / 0
    Where are these reports? I heard the 4" XD shoots 230 grainers under 800 FPS. That is pretty slow, does anyone know how these bullets perform?
     
  10. Dirty Rod

    Dirty Rod XDTalk 3K Member Founding Member

    Joined:
    Sep 3, 2008
    Messages:
    3,261
    Likes Received:
    0
    Trophy Points:
    36
    Location:
    Arizona
    Ratings:
    +2 / 0
    There are FBI and other penetration and balistics tests all over the net. Just google it and you will get pages that all say different things. Here are a couple.

    http://www.chuckhawks.com/handgun_power_chart.htm
    45 ACP Stopping Power
    http://demigodllc.com/~zak/firearms/fbi-pistol.php

    Remember, the .45 was designed to be a large slow round so the majority of FMJ rounds are moving between 800 and 900 fps which is more than enough for SD ranges. As mentioned earlier, there are plenty of options for 185 and 165 gr .45 SD rounds that will get you more muzzle velocity but that doesn't necessarily translate into more penetration, or more importantly, more energy or more effectiveness.

    If you are really looking for a high velocity round then .45 may not be the round for you. You can always look at +P but then you have to balance that will the additional recoil and it's affect on your accuracy and follow up shots. Other calibers (9mm, .35, 10mm, .40, etc) will have more velocity but, as mentioned before, that is only a part of the overall effectiveness of any particular round.
     
  11. TexDeuce

    TexDeuce XDTalk 100 Member

    Joined:
    Mar 28, 2009
    Messages:
    133
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Dallas, TX
    Ratings:
    +0 / 0
    Thanks for the reply. I favor the .45 over other calibers because of the larger hole. I really just care about penetration. I want the 230 grain because of its density. Will the 230 grain traveling 790-800 fps get adequate penetration and the damage that needs to be done? I've go this big hangup dropping down from a 5" to 4" barrel.
     
  12. motodan00

    motodan00 XDTalk Member

    Joined:
    Dec 27, 2010
    Messages:
    95
    Likes Received:
    0
    Trophy Points:
    0
    Ratings:
    +0 / 0
  13. Dirty Rod

    Dirty Rod XDTalk 3K Member Founding Member

    Joined:
    Sep 3, 2008
    Messages:
    3,261
    Likes Received:
    0
    Trophy Points:
    36
    Location:
    Arizona
    Ratings:
    +2 / 0
    I see that. The links I posted show penetration for the various rounds. The second one has some comments about 4" barrels showing penetration from 10" to 14" depending on the round. Not sure what penetration or velocity numbers you want to see but they are all there.

    In the end, to ease your mind, you can always trade yours for a tactical.
     
  14. agalindo

    agalindo XDTalk 15K Member Founding Member

    Joined:
    Jun 25, 2004
    Messages:
    16,131
    Likes Received:
    25
    Trophy Points:
    0
    Location:
    Alpine Texas
    Ratings:
    +25 / 0
    From a shorter barrel the bullet will actually penetrate deeper because it will expand less and expand slower. What's the difference "very little" measured in fractions of an inch more than likely.

    A 230gr bullet traveling at +-800fps will still crush bone and penetrate deep.
     
  15. TexDeuce

    TexDeuce XDTalk 100 Member

    Joined:
    Mar 28, 2009
    Messages:
    133
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Dallas, TX
    Ratings:
    +0 / 0
    This post makes me feel better.
     

Share This Page

Search tags for this page
4 45 acp velocity
,
4in barrel 45acp
,
4 inch 45 acp velocity
,
5 vs 4 2 inch barrel 45 acp
,
45 acp velocity loss in 4 inch barrel
,
45 acp 4requires less charge than a 5
,
45 out of a 4 inch barrel
,

45 acp velocity vs barrel length

,
45 acp barrel length vs velocity
,
45 acp 4 inch vs 5 inch barrel
,

45 acp ballistics barrel length

,
230 gr acp velocities from a 4 inch barrel
,
best barrel lengtjh for 45 acp
,
does a 5 barrel 45acp have less kick than a 4.25 barrel 45 acp
,

glock 30 ballistics

,
glock 30 chronograph
,
velocity loss from 7.25 barrel to 4
,
velocity of .45 from 4 barrel
,
what is the best barrel length for the 45acp
,
xd 45 with 4 in barrel