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AA#7 in 9mm

Discussion in 'Handloading and Reloading' started by JO JO, Aug 28, 2011.

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  1. JO JO

    JO JO Member

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    anyone use AA#7 in 9mm does it work well ?
    also thinking of power pistol but i have read it has a bad flash to it
    looking for a powder that fills up case a mediam burn.
    Thanks
     
  2. ljnowell

    ljnowell Member

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    I've got some pictures on this forum of Power pistol in a 45acp with 185gr HPs. Its flashier than some powders, but its not like h110 or 2400. I wouldnt be too afraid to use it really, but thats just me. I have some experience loading Power Pistol in 9mm and I can tell you, its a good powder for it.
     
  3. 3leggeddog

    3leggeddog Member

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    9mm powder

    AA 7 is pretty slow for a 9mm. I found that unique [medium burn rate ] or good old W-231 works great.
     
  4. oldreloader

    oldreloader Member

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    I have used AA #7 in 9MM and it will work ok.I shoot cast bullets and it works best FOR ME in 9MM with 125 gr and 147 gr bullets.
     
  5. ArchAngelCD

    ArchAngelCD Member

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    I haven't used AA#7 in the 9mm but I have used AA#5. I liked the results I got from AA#5 but I personally feel AA#7 might be too slow a powder in the 9mm. The 40 S&W yes but possibly not the 9mm. My favorite powder in the 9mm is Longshot.
     
  6. SHR970

    SHR970 Member

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    I've run lots of #7 through the 9mm. It works best with 124gr and heavier jacketed or thick plated bullets. I have not experienced a flash issue with it; I have a ported barrel on my P89. It makes good enough port pressure that the muzzle actually goes down a little. #7 was originally developed for subgun ammo featuring 147 & 158 gr. bullets. This powder likes to run on the stiffer side of the charge. I am still loading to older data with no signs of pressure problems (the newer data has been reduced a bit)((work up, YMMV, at your own risk)).

    #7 is also a good crossover powder for 357; I particularly like it with 125 gr. HP's for use in my SP101.

    If you are going to run 115 gr. pills, use something faster like #5, Herco, Unique, WAP; 231 / HP38 just to name a few.
     
    Last edited: Aug 29, 2011
  7. JO JO

    JO JO Member

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    I been thinking of power pistol aswell is the flash and blast real bad with this powder
     
  8. highlander 5

    highlander 5 Member

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    According to AA,No 7 was developed with the 9mmx19 in mind.
     
  9. dougader

    dougader Member

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    I only ever used AA7 with 115 grain bullets in 9mm. Speer 14 data up to 9.6 grains. Work up to this. Just guessing, but I think it runs into +P territory near 9.6 grains.

    I like VV 3n37, Power Pistol, WAP/Silhouette for better all around powders in 9mm. VV3n37, AA7 and Silhouette have less flash than Power Pistol but when does that really come into play for you? I don't generally use handloads for SD so I pay less attention to muzzle flash.

    AA7 uses nearly 2/3 more powder than the others, too.
     
  10. ArchAngelCD

    ArchAngelCD Member

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    Where did you get that information? Source please...
     
  11. Steve C

    Steve C Member

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    AA7 is the canister grade of the powder used by the Israelis for their 9mm SMG ammo. Burn rate similar to Blue Dot it is one of the slower powders that will still work in the small case of the 9mm. If looking for maximum velocity in 5" or shorter handguns then a faster medium burn rate powder is better but for carbines AA7 will work very well.

    For example a 8.0gr load of AA7 behind a 115gr Rem JHP produce 1,163 fps from my Glock 19. 6.3grs of Power Pistol sends the same bullet out of the muzzle of the same gun at 1,222 fps as does 5.7grs of Unique.
     
  12. BullfrogKen

    BullfrogKen Moderator Emeritus

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    Comes right out of the Accurate Arms loadbook. I have one here at the house.


    I've had a lot of success loading mid-power 38 Supers with it. It'll work the best with heavier grain bullets in a 9mm. It will meter extremely well. It does not have much flash, but there are other powders that will do better if flash is a consideration. It will fill up the case quite nicely. I have to use about 2 grains more powder in my 38 Super to achieve the same velocity that I get when I use AA No5.
     
  13. highlander 5

    highlander 5 Member

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    According to the free reloading guide from Accurate Arms giving a description of each of their powders and the cartridges that they are used for.
     
  14. DanTheFarmer

    DanTheFarmer Member

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    I've got a Hi-Point 995ts on back order. It sounds like AA #7 might be a good candidate for some 115 grain reloads intended for its 16" barrel.

    Anybody use AA #7 for 9mm carbines?

    Thanks.

    Dan
     
  15. zeke

    zeke Member

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    AA-7 is excellent powder for 124 grain jacketed 9mm, and seems to prefer magnum primers for accuracy/velocity.
     
  16. ArchAngelCD

    ArchAngelCD Member

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    Thank you both... I think AA#7 warrants further consideration...
     
  17. SHR970

    SHR970 Member

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    Accurate Arms Reloading Guide Updated 5th Edition Copyright 1992.
     
  18. Walkalong

    Walkalong Moderator

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    Which is loaded hot.

    For anything but top end loads, AA # 7 is a bit slow for 9MM, IMHO. There are better overall 9MM powders the way I see it.
     
  19. helotaxi

    helotaxi Member

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    Longshot is slower than AA#7.

    AA#7 is suitable for heavier bullets (124gn+) in 9mm and Hornady lists it as producing the highest velocities with 124 and 147gn bullets.
     
  20. ironhead7544

    ironhead7544 Member

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    AA#7 works fine in the 9mm. Loaded a lot of SMG ammo with it and it worked the action perfectly. No problems with pistols either.
     
  21. SHR970

    SHR970 Member

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    NATO spec for 9mm is 36,550 psi which is above SAAMI's 35,000 psi limit. However, NATO spec allows pressures slightly above 40,500 psi (STANAG 4090) which is above +P+ territory.
    AA#7 was never developed to be a universal 9mm powder; it was developed to push heavy for caliber 9mm bullets out of an open bolt SMG at best velocities without going overpressure.

    In my experience, you can go compressed loads with 147 gr. bullets. If you read Brian Enos' forums, the prevailing thought is that you can not stuff enough powder into the case to overload it. Of course trying to do so is at your own risk as these loads are above published SAAMI Max.
     
  22. ArchAngelCD

    ArchAngelCD Member

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    Powder speeds are different in every chart you look at. The relative powder speed is actually dependent on the cartridge it's loaded in.
     
  23. noylj

    noylj Member

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    AA7 is good for 147gn bullets and will work for lighter bullets.
    I find AA5 is a better general purpose 9x19 powder and is quite accurate.
     
  24. jcmios

    jcmios Member

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    Accurate Arms loadbook #1 & #2 do state that #7 powder was developed for the 9mm. It is also an excellent performer in the hotter .357SIG among others

    Jim
     
  25. cfullgraf

    cfullgraf Member

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    AA#7 was my 9x19 powder of choice until I discovered True Blue during the last component shortage.

    Shot well, metered well. Accurate Powders now has data for plated bullets in 9x19 with AA#7
     
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