Alliant Power Pistol powder

This is a discussion on Alliant Power Pistol powder within the Reloading forums, part of the Defensive Ammunition & Ballistics category; Correct me if I'm wrong, but from the Alliant website, isn't this the maximum load for a 115gr Speer GDHP. So subtract 10% for a ...

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Thread: Alliant Power Pistol powder

  1. #16
    New Member Array cfarther's Avatar
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    Correct me if I'm wrong, but from the Alliant website, isn't this the maximum load for a 115gr Speer GDHP. So subtract 10% for a starting load and you get 6.03 gr.

    6.7 gr of PP with cci 500 primers 1212 fps.

    That said, I've loaded a 100 or so up to the max 6.7 gr, and haven't had any pressure issues. It also hasn't been the most accurate at that level.

    Woody

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  3. #17
    New Member Array Sparky508's Avatar
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    I use Power Pistol in my 45 Auto loads, and the following load gave me an average speed of 820 from a 5" and 720 from a 3" barrel. (shot over a chrono)

    6.5g Alliant Power Pistol
    Winchester Large Pistol Primers
    230g FMJ
    OAL 2.250


    Its an energetic powder to be sure!

  4. #18
    New Member Array 40Shootin's Avatar
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    Velocity and load question

    I have the new Lyman 40th Edition Loading Manual. It has loads for the 40 S&W using Power Pistol as follows:

    175gr. Lead 1.125 OAL out of a 4" barrel

    min 5.9gr. @ 908 fps max 6.6gr. @ 998 fps

    My question and concern is that I am loading 180gr. HSM Lead out of a 3.8 inch barrel and getting the following:

    6.0gr. Power Pistol and getting an Avg of 1032 fps
    6.3gr. Power Pistol and getting an Avg of 1067 fps

    As you can see, I am getting much higher velocities than the book says. I dont have and dont seem to be able to locate a decent calculator for pistol pressures, so I dont know if I am getting toward the max pressure or not. Is the increase in velocity between what the book says and what I am seeing a concern?????

    I recently had a KB with my 40 M&P Shield because I was using a different powder than I thought I was using. Went to a local sporting goods store and asked for a pound of Clays Universal and they gave me a pound of Clays. I knew there was Clays International and Clays Universal, I didnt know there were three flavors of Clays. I loaded some 155XTP's with 6.1gr. of Clays and my Shield didnt like that at all. I know the difference now and that wont happen again for sure. I have loaded rifle for a long time but just recently started loading pistol. I have come to realize that it takes more research and attention to reloading pistol. Differences between min and max are so tight.

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