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Thread: Loading for the MAC 380

  1. #41
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    That's the main plan. I've got 13 different brands of factory 380 ammo inbound.

  2. #42
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    I’m still wondering what you’re trying to accomplish?
    Please visit my FB page for the latest CF-W bolt information.
    https://www.facebook.com/VegasSMG/?ref

  3. #43
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    #1. To recreate the harder hitting MAC 380 ammo.

    #2. If 115 and 124 bullets can be loaded, it will reduce reloading components.

    #3. As far as the "A" bolt, it is sold as a slowfire 9x19 bolt for the SWD M11A1. Those of us with a MAC or RPM small grip may find heaver 380 projectiles aid in reliability. This could be another option for those using small grips/mags. I've heard you are a fan of options.

    #4. Fun.
    Last edited by strobro32; 11-12-2018 at 06:15 AM. Reason: Had to add the "Fun" objective

  4. #44
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    Concord, the 130 grain projectiles are .590".

  5. #45
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    I’m a HUGE fan of options, but I’ve got other 9mm subguns I can use if I need something that “hits harder”.
    Everything else makes sense. Thank you for that.
    Please visit my FB page for the latest CF-W bolt information.
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  6. #46
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    Quote Originally Posted by strobro32 View Post

    I'm using a 5" barrel.
    Berrys 130 grain plated .356 projectiles
    COAL .985
    Starline brass
    WSP primers


    I will start at 2.7 grains
    Tightgroup
    Bullseye
    231
    Unique
    Watch your pMax (max chamber pressure) with these! I don't know how/why you picked 2.7 grains, but here are the predicted numbers with 2.7 grains of each powder you mentioned -- some are *dangerously* high (don't do it):

    Titegroup - pMax 35,637 psi but muzzle velocity 936 fps, case fill 84%, propellant burnt 100%
    Bullseye - pMax 27,795 psi, mv 928 fps, case fill 103%, propellant burnt 94%
    Winchester 231 - pMax 26,093, mv 878 fps, case fill 90%, propellant burnt 98%
    Unique - pMax 19303, mv 828 fps, case fill 105%, propellant burnt 88%

    I am going to move this thread to the AMMO & RELOADING forum...
    Now hosting: www.MAC-11.info

  7. #47
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    Suggested powder and load?

    I will chrono a check the software.

  8. #48
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    .

  9. #49
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    Try some CFE-Pistol powder. 3.9grn w/95grn FMJRN. Runs smooth - no over pressure.
    WE WON !

  10. #50
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    Well I'm surprised by my results reloading the 130 grain MAC 380 SMG ammo. I was using the EXP 9mm A bolt for the testing.

    I shot the only MAC 380 SMG cartridge I owned. I just wanted the case anyway. The COAL was .972 and it shot at 948 fps. There was very slight flattening of the primer.

    Concorde's program predicted fps @ 2.7 grains:
    Titegroup - pMax 35,637 psi but muzzle velocity 936 fps, case fill 84%, propellant burnt 100%
    Bullseye - pMax 27,795 psi, mv 928 fps, case fill 103%, propellant burnt 94%
    Winchester 231 - pMax 26,093, mv 878 fps, case fill 90%, propellant burnt 98%
    Unique - pMax 19303, mv 828 fps, case fill 105%, propellant burnt 88%

    I got:
    Powder + fps +Berrys 130 gr RN, Starline case, WSP, COAL .985”

    Titegroup
    2.5 gr – 834 fps
    2.6 gr – 850 fps, starting to flatten primers
    2.7 gr – 883 fps, flattened primers

    W231
    2.7 gr – 822 fps
    2.8 gr - 834 fps
    2.9 gr – 851 fps
    3.0 gr – 870 fps
    3.1 gr – 884 fps, starting to flattened primer
    3.2 gr – 896 fps, flattened primers

    Bullseye
    2.7 gr – 830 fps
    2.8 gr – 858 fps
    2.9 gr – 879 fps
    3.0 gr – 887 fps
    3.1 gr - 924 fps, starting to flatten primers, 10 shot average

    Unique
    2.5 gr - 776 fps
    2.6 gr - 797 fps
    2.7 gr – 828 fps, flattened primer

    Clays
    2.3 gr 793
    2.5 gr 840
    2.7 gr 873
    2.9 gr 903
    3.0 gr 932
    3.1 gr 958, starting to flatten primers, unburnt powder
    Last edited by strobro32; 12-10-2018 at 10:35 AM.

  11. #51
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    My research leads me to try IMR Target next or Hodgdon CFE Pistol. The reloading data says it's close on velocity.
    Last edited by strobro32; 12-09-2018 at 09:34 AM.

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