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38/ 357 bullets in 9mm?

Discussion in 'Reloading' started by Clay1, Sep 29, 2012.

  1. Clay1

    Clay1

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    Anyone load .357 bullets in a 356 barrel? I'm not talking about hot loads. You ask why would you do that. I was given about 5000 .357 124 grain hp bullets. I just want to shoot them up in my 9 for local matches/ league practice nights. While I load for 357 Rem mag, I will never go through this many, but shooting my G34 in matches they won't last all that long.

    Think something that makes minor PF in Production/SSP.

    Maybe I should just trade them for something else and forget it.
     
  2. fredj338

    fredj338

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    so.cal.
    If you work up the load carefully, yes it can be done safely. You need a chronograph to chart the vel increase, which will indicate a pressure increase. I have succesfully load 0.357" bullet in 357sig as an experiment. Your accuracy may vary, but it's not uncommon fo guys to shoot 0.357" lead bullets in their 9mm all the time. You just can't plug & play though, they have to be worked up.
     

    Last edited: Sep 29, 2012

  3. Hoser

    Hoser Ninja

    2,350
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    I had a bunch of 158 gn round nose bullets I burned through in 9x19 and 38 Super. Worked just fine, but start at min loads and work up.
     
  4. glock_19guy1983

    glock_19guy1983

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    dixie
    I shoot .357 158gr bullets in my .355 38 super all the time. Like said work up from the bottom and watch for pressure signs and you will be fine.
     
  5. Clay1

    Clay1

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    Thanks for the thoughts guys, much appreciated.
     
  6. If your 357 is the Ruger Blackhawk, that would be the nuts.
     
  7. Clay1

    Clay1

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    Dec 7, 2004
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    Smith 27, N frame 8 3/8" with presentation case. :cool:
     
  8. ROGER4314

    ROGER4314 Friends Call Me "Flash"

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    Dec 26, 2008
    East Houston
    Been loading since the mid 1960's and have followed a policy of always loading from published data. I have a whole library of loading manuals and if isn't in one of those books, I don't load it. I don't use Internet loads and won't post loading data on the Internet.

    Would I use those bullets for the load that you described? Not a chance.

    Flash
     
  9. WiskyT

    WiskyT Malcontent

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    North Carolina
    I've shot 0.357jhp's meant for 38/357 in my G17 with no problems. Start low and work up, just like any other reloading project and you'll be fine.
     
  10. Clay1

    Clay1

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    Wisconsin
    You'll probably notice that many loads from the 60, 70 and 80s are no longer in the current books. They liked things hotter in the good ole days. :upeyes: I have many manuals from the 70's and a couple from the 60's.

    Second, minor power factor is 125,000. Power factor is bullet weight X velocity. So for a 125 grain bullet it needs to go 1008 fps. That's a very mild load out of a G34.
     
  11. Colorado4Wheel

    Colorado4Wheel

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    Power varies a little day to day in a gun and chrono so most people load to around 130pf. I do wonder a little if the larger jacketed bullet would deform less easily then lead of the same caliber leading to much higher pressure then running a lead .357 in 9mm.
     
  12. WiskyT

    WiskyT Malcontent

    11,682
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    Jun 12, 2002
    North Carolina
    Speer #8 lists 0.357" 125jsp loaded at about a million fps in 9mm. Wonder no more.
     
  13. Ceapea

    Ceapea

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    Apr 12, 2010
    Midwest
    A related question...
    What about using 9mm bullets in 38/357 revolvers?
    I have a ton of 90gr, 9mm/380 bullets that are too short for 380 and work just OK in 9mm. There is not enough bearing surface to hold them in the 380 cases and still keep them below max COAL.
    I was thinking that since they taper down so quickly, that they might work with a light roll crimp in a 38. I know that they won't just fall through the barrel of a 38. As a matter of fact, they are still quite a bit larger than the minor diameter of the barrel. So, they should have enough, but not too much, back pressure.
    I think that I'm gonna give it a try. Light plinking loads.
     
  14. Colorado4Wheel

    Colorado4Wheel

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    Whatever that means.
     
  15. Clay1

    Clay1

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    Wisconsin
    I went into the shack and found a Speer number 10. Inside cover was dated by me on Aug 8th, 1984. It lists .355 and .356 bullet diameters but no .357. Also interesting was that the bullet weights listed were 88, 100 two 125 gr loads. That's it. I have some older manuals that were my father's and haven't searched those yet.

    I also wonder, like Colorado4wheel about pressure increases and that was the reason for the post in the first place.

    Angus Hobdell a sponsored CZ shooter and the importer of Zero bullets into this country once told me that he shoots both 356 / 357 interchangeably just depends on what he has the most of. That wasn't second hand, I was on the phone with him directly. Then again, if something does go wrong with his gun he probably just gets another one.
     
  16. fredj338

    fredj338

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    Pressures are increased, it's why everyone tells you to work up the load. Bullets are not plug & play, it matters.
     
  17. Clay1

    Clay1

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    There is nothing in this thread that has surprised me or that I have disagreed with. Yes, it can be done but do it with caution. Thanks everyone for the responses. Note: I have been reloading since 1982 (30 years).
     
  18. Colorado4Wheel

    Colorado4Wheel

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    My wonder is.....

    Is there a huge increase in pressure as the FMJ bullet is squeezed by the throat that doesn't show up in extra velocity after the bullet starts going down the barrel and picking up speed. So more pressure with no gain in velocity at the chrono.
     
  19. WiskyT

    WiskyT Malcontent

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    Jun 12, 2002
    North Carolina
    My wonder is if people even know what their bore size is. Lots of Colts with 0.355" bores shooting 0.357" jacketed bullets in 357Mag.