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Thread: Hornady 9mm XTP ongoing experiments

  1. #21
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    Hornady 9mm XTP ongoing experiments

    Quote Originally Posted by Ron3 View Post
    Isn't #7 a little slow for your 4 inch barrel? Maybe #5 or CFE-P or similar would get you more velocity?
    CFE Pistol and #7 are the only powers the Hornady manual lists that will safely push the 124 XTP to 1150 fps. The case will be slam full with #7 but it will work. #5 pressure maxes out at about 1075 fps.
    Last edited by Waylander; 01-23-23 at 23:46.

  2. #22
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    Quote Originally Posted by Waylander View Post
    CFE Pistol and #7 are the only powers the Hornady manual lists that will safely push the 124 XTP to 1150 fps. The case will be slam full with #7 but it will work. #5 pressure maxes out at about 1075 fps.
    I see.

    So you just need another inch of barrel.

  3. #23
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    Quote Originally Posted by Ron3 View Post
    I see.

    So you just need another inch of barrel.
    Even Hodgdon lists 124 XTP with 7.4 grains of #7 out of a 4 inch barrel at 1144 fps. Iím not sure why youíre splitting hairs over this.

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    Quote Originally Posted by Waylander View Post
    Even Hodgdon lists 124 XTP with 7.4 grains of #7 out of a 4 inch barrel at 1144 fps. Iím not sure why youíre splitting hairs over this.
    Western Powders lists the 124 XTP in 9mm at 7.3 grains of AA#7 at (their max for regular 9mm loads) 1150fps / 34750psi. Sadly their 9mm+p data does not show that particular bullet with AA#7. The Speer GD in that weight they show going up to 7.9 grains in the +p data with that powder so I would guess you have a little room to play with here if your firearm is able to fire +p 9mm rounds safely.


    They do not specify barrel length or firearm used for testing.

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    Quote Originally Posted by DG23 View Post
    Western Powders lists the 124 XTP in 9mm at 7.3 grains of AA#7 at (their max for regular 9mm loads) 1150fps / 34750psi. Sadly their 9mm+p data does not show that particular bullet with AA#7. The Speer GD in that weight they show going up to 7.9 grains in the +p data with that powder so I would guess you have a little room to play with here if your firearm is able to fire +p 9mm rounds safely.


    They do not specify barrel length or firearm used for testing.
    Western #1 lists that exact data, using a 4Ē barrel. It does not specify if its a universal receiver, or a real gun. It looks like they used the standard barrel length for most cartridges and donít mention firearm for them, and has a picture of a universal receiver in one of the sections, so I suspect they used a universal receiver for all of their data.

  6. #26
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    Hornady 9mm XTP ongoing experiments

    Hornady manual

    S & W Model 39
    4", 1 in 10" Twist Hornady/Frontier Winchester WSP

    Powders that worked exceptionally well in our test weapon were Accurate #7, and Alliant Power Pistol.
    Velocity differences between 4" and 5" barrels were negligible.
    Whatís interesting is they show a larger max charge of 7.9 grains Accurate #7 only pushing to 1150 and from what I understand, their recommended max loads are usually on the conservative side.

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