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.357 and 9mm Powder???

Discussion in 'Handloading and Reloading' started by stavman11, Nov 6, 2012.

  1. stavman11

    stavman11 Well-Known Member

    Well.... been mainly shooting 38s rds in my S&W 19-3, 6" barrel .357..... But have some Special loads of .357 from a buddy (he has long since passed away) no clue the stats of the .357 loads but MAN they pack a punch....

    Now that i load alot of .223 really thinking about .357 loading now...

    I shoot more 9mm but they are so cheap to buy... not sure if I will re-load them... But .357 is so POWERFUL and Fun.... re-thinking my loading options

    any input on Powder that would work well for Both, and any incite on Loading .357 would be great... powder...Bullets.... etc.... i should have around 400-6000 brass currently so pretty ready to roll......

    Oh and its a Lee pro 1000 press

    Thanks guys

  2. rcmodel

    rcmodel Member in memoriam

    Unique will work very well in 9mm and pretty well in .357.

    It will not give the top velocities a slower powder like 2400 or H110 will in the .357.
    But those powders will not work at all in the 9mm.

    It will do well enough to let you know you are shooting a .357 though.

  3. tightgroup tiger

    tightgroup tiger Well-Known Member

    I have used power pistol in both my 9mm and .357mag loads. It seems to be very accurate but I don't like the brilliant flash that power pistol delivers with heavier loads.
    You will actually loose sight of your target for a moment.

    I also use titegroup and universal for both of these calibers as they will meter well in the Lee powder measure. As does 231 and bullseye, and just about any of the faster burning powders. I never considered the 357 case to be position sensitive with powder or prone to shape charging like the larger bore pistol cartridges are with light loads of fast burning powders.
    Unique doesn't meter well in most powder measures and I've found it to be static prone in my reloading room. Other people may not have that problem.
    I will say this though, my lee pro autodisc powder measure on my pro1000 will throw more consistent loads of Unique then my Hornady or RCBS uni-flow measures will.
    Go figure. (Again, maybe static induced)
    Don't be afraid to try Unique, It's been around since like 1899 and is tried and true for accuracy. Unique is usually a Love-Hate relationship with not much in between.
    Just my opinion.
  4. Magnum Shooter

    Magnum Shooter Well-Known Member

    Any powder that will work for both 9mm and 357Mag will not give that punch in 357Mag you are looking for. You need a slower powder like 2400 for that and it doesn’t work in 9mm. You simply can’t cut corners by using one powder and still get maximum performance from both.
  5. ColtPythonElite

    ColtPythonElite Well-Known Member

    Power Pistol
  6. Hungry1

    Hungry1 Well-Known Member

    I've been shooting .357 LSWC cutters and jacketed 9mm over Unique with no problems.
  7. CZ57

    CZ57 member

    If you're loading 9mm to full power and want to load .357 Magnum to about 100 to 150 FPS of full velocity, the best powder you're likely to find for it is AA#7. ;)
  8. SHR970

    SHR970 Well-Known Member

    AA#7..full house 9mm (especially with heavier bullets) and not quite full house 357. In my last keg of powder I had worked up loads that were REAL close to H110 / W296 velocity.

    Next up is Longshot.
  9. ArchAngelCD

    ArchAngelCD Well-Known Member

    There are many medium burn rate powders that will work fairly well in both the 9mm and .357 Magnum.

    They include:
    Power Pistol
    AA#5 or AA#7
    And probably a few more but those are the powders I know first hand work for both... Note, faster powders like W231/HP-38 and a few others can also be used for both but will not deliver real magnum performance in the .357 Magnum. The listed powders will at least deliver lower end real magnum power while slower powders like 2400, AA#9, W296/H110 and the like will produce top end power.

    For the life of my I can not figure out why so many reloaders want to use only 1 powder for none similar cartridges. You really save nothing using 1 powder that really isn't optimum for each and you cheat yourself of one of the main reasons for reloading, better performance that factory ammo. That said, if I really had to pick only one powder for those two calibers it would be HS-6.
    Last edited: Nov 7, 2012
  10. the count

    the count Well-Known Member

    Just get Bullseye for all your pistol loads. End of story.
  11. BYJO4

    BYJO4 Well-Known Member

    I use Bullseye for 9MM, 357, and 45 ACP.
  12. ArchAngelCD

    ArchAngelCD Well-Known Member

    Bullseye, really? That is just about the last powder I would use in a .357 Magnum. that powder is way too fast for good results. Alliant doesn't even list Bullseye for the .357 Magnum other than with lead bullets. If you would have said Unique, sure, but Bullseye?
  13. Fishslayer

    Fishslayer Well-Known Member


    9mm & .45ACP, sure. Not for sho' nuff Big Dog .357 tho.
  14. 4895

    4895 Well-Known Member

    I recommend Alliant's BlueDot powder for hot 9mm and hot .357 mag. For 9mm it burns clean enough for me and has a nice flash with top speeds. In .357 mag it provides magnum power for bullets ABOVE 125 grains ONLY!
  15. J_McLeod

    J_McLeod Well-Known Member

    I really like HS-6 in 9mm, and it'll provide some of the higher velocities for .357 from the non magnum powders.
  16. CGT80

    CGT80 Well-Known Member

    Paying double what it costs me to load 9mm is cheap? I load 124 jhp ammo in 9mm for $12.50 per 100 rounds. It takes me 3 minutes to load 100 rounds.....well 4 minutes if you include loading up the primer tube with primers and throwing bullets in the bullet feeder.

    You could use less expensive bullets and go cheaper yet. Savings is usually 50% or more for metallic centerfire ammo. I can't buy components for 12 ga target loads as cheap as I can buy the finished winchester ammo, otherwise I would load for shotgun too.

    I love hp-38/win231 for small pistols and for light magnum pistol loads. I use trail boss for light 460 Mag pistol loads. It will work for any pistol or rifle, but may not work the action on some semi autos. h-110/win 296 is common for magnum full power loads. It is no big deal to use multiple powders. I try to stick to only a handful to make it easier though. It can be fun to work up new loads and run them on a chrono, but I also like to stick with a load after it is proven.

    My pet 9mm load is 4.2 grains of win 231 and a MG 124 JHP seated to 1.125" at a speed of 970fps.

    I am going to give moly coated lead bullets another try in my 9mm competition gun though. MG bullets are up to $91 per K and I can get bear creek moly for $57 per K. It is hard to spend that extra money.
  17. ArchAngelCD

    ArchAngelCD Well-Known Member

    I have a similar load and I also like W231/HP-38 for most of my handgun loading in spite of what I posted above because I don't like it for magnum calibers. I usually charge 4.0gr W231 under a 124/125gr LRN bullet and 4.4gr W231 under a 124gr FMJ bullet. Both are great 9mm loads which are clean and accurate for me...

    Are you really getting 970 fps from a 4.2gr charge of W231 under a 124gr JHP bullet? I haven't sent mine over a chrono yet but I didn't think the velocity would be that high. How long is the barrel on the pistol that delivered 970 fps?
  18. stavman11

    stavman11 Well-Known Member

    Great Info Guys...

    I had no Clue that it was such a difference in Powder for a 9mm and .357.... Since I will start with 1lb of powder most likely, I will try 2 different for each then.... and Possibly try a AA#7 for both and see what the results are...

    Heading out today to try some new loads for .357 (factory) and see how i like them over .38special rounds...

    Also gunna $$$ out new gear for .357 loading... see what it actualy costs localy 1st...

    thanks again guys

  19. JoeDaddy

    JoeDaddy Well-Known Member

    Stavman be sure you don't push your model 19 too hard. Take this from someone who has cracked a forcing cone on mine. Search "cracked forcing cone model 19" for more info. Also stay with the 158 grain bullets.

    I stick with mid-range power pistol and 2400 loads for mine and usually use lead 158 grainers. Don't use the 125's at high velocity in your 19.
  20. 2zulu1

    2zulu1 Well-Known Member

    Another vote for AA #7, it will match factory 125/1450fps with a 4" barrel. It's also a very good powder for the 38 Super and 10mm.

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