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9mm okay in .357/.38?

Discussion in 'Handguns: Revolvers' started by Brass Rain, Jun 12, 2008.

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  1. Brass Rain

    Brass Rain Member

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    With moon clips, I mean. I think I've heard it somewhere that you can fire 9mm in a .357 or .38 revolver. The diameter is the same, isn't it?

    EDIT: I don't really intend or desire to do this, I'm just curious.
     
    Last edited: Jun 13, 2008
  2. texas bulldog

    texas bulldog Member

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    not quite. .355 diameter versus .357. there are wheelguns made specifically for 9mm, and i understand there may be some guns that can fire either when using moonclips for the 9mm. however, there would also be a dropoff in accuracy with the 9mm due to the smaller diameter not quite matching the bore.

    someone much more knowledgeable than me on this topic will be along shortly, i'm sure.
     
  3. Brass Rain

    Brass Rain Member

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    Okay, thanks bulldog. I looked at a 9mm next to a .38 and they appear extremely similar.

    .38 S&W is okay though, right?
     
  4. machinisttx

    machinisttx Member

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    .38 S&W uses a .360" diameter bullet rather than the .357-.358" of the .38 Special and .357 Magnum. Some guns will chamber it and others won't. I'm pretty sure the pressure is so low that it wouldn't hurt anything, but accuracy would probably be non existent. .38 S&W ammo is about $30 or so a box--or was the last time I looked.
     
  5. CWL

    CWL Member

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    ONLY use the type of ammunition that is on the side of the firearm. This is not a merely a suggestion.

    NEVER go by "I think I've heard it somewhere" when choosing ammunition.
     
  6. texas bulldog

    texas bulldog Member

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    to amend my earlier statement, a gun that could fire either 9mm or .38 special would actually probably use a replacement cylinder ala the .45LC/.45ACP revolvers such as the ruger blackhawk. but again, i'm no expert on this. i know both S&W and ruger have made dedicated 9mm revolvers, but that's not really what you're asking.

    then, of course, there is the medusa, which can fire .38sp, .357mag, .380acp, or 9mm without using moonclips or replacement cylinders. good luck finding one, and good luck affording it even if you do find one. sure would be nice from an ammo versatility standpoint though.

    and CWL's advice above is good, i'm just speaking hypothetically.
     
  7. bikerdoc

    bikerdoc Moderator Staff Member

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    not a good idea
     
  8. DaleCooper51

    DaleCooper51 Member

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  9. Janitor

    Janitor Senior Member

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    The Blackhawk convertible is (was?) available in 9mm/.357.
     
  10. doc2rn

    doc2rn Member

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    You can shoot 9mm out of a .357 with the use of moon clips to center the round in the chambers.
    Be sure to scrub really good as the residue from smaller cartidges can can impede you from returning to full size cartridges.
     
  11. ashtxsniper

    ashtxsniper Member

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    There will not be a noticeable accuracy difference between the two bullet sizes. 9mm bullets are usually .355 but 357/38 bullets are usually .356 I have loaded 9mm with 357/38 bullets and 357 with 9mm bullets. There is no accuracy difference and you don't lose any velocity over the difference.
     
  12. Gunsby_Blazen

    Gunsby_Blazen Member

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    Its a good rule to follow,
    only use the intended ammo for a particular firearm.
    If you want to shoot 9mm in a revolver, get a revolver dedicated to 9mm ammunition.
     
  13. DWFan

    DWFan Member

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    9mm vs .38/.357

    There is more than just the bullet diameter that is different between the two. The 9mm is a tapered wall case with a diameter of approx .391" just above the rim; the .38/.357 is a straight-wall case with a diameter of .379". If a 9mm cartridge fits in your .38/.357, your chambers are seriously oversize. Full moon clips aren't meant to center a rimless cartridge in a chamber, they are used to provide something for the revolver extractor star to push against to remove the case from the cylinder.
     
  14. JShirley

    JShirley Administrator Staff Member

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    I have a Blackhawk 9mm/.357 convertible. Works well. I wouldn't suggest trying to shoot 9x19mm in a .357 without a dedicated cylinder.

    J
     
  15. leadcounsel

    leadcounsel member

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    Do you want to risk losing your hand or damaging your firearm because you tried shooting the wrong ammo?

    Just shoot what the weapons is designed for.
     
  16. RyanM

    RyanM Member

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    9mm SAAMI specs are a maximum chamber pressure of 35,000 PSI.

    .357 magnum is also 35,000 PSI.

    .38 SPL is 18,000 PSI.

    Although 9mm would most likely fire in a .38 or .357 revolver, the results probably wouldn't be pretty in a .38. In a .357, you could expect accuracy to be non-existant, with the distance the bullet has to travel to the choke at the front of the chamber.
     
  17. Steve C

    Steve C Member

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    A 9mm will not chamber in a standard .38spl or a .357 mag. If you think it will you obviously have never tried it. The case of the 9mm is tapered from an outside base diameter of .391" to a neck diameter of .380". A .38 spl is a straight wall case with an outside diameter of .379" and the chambers for .38/357's are only slightly larger. A 9mm will only fit about 1/2 the case into a chamber leaving too much case outside to ever close the cylinder.
     
  18. trekgod3

    trekgod3 Member

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    Just whipped out my old arminius .38/.357 and it will NOT chamber a 9mm. Goes only about 1/2 way in.
     
  19. rcmodel

    rcmodel Member in memoriam

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    +1

    I wondered when all the folks offering bad advice were going to get around to trying to put one in a .38/.357 chamber!

    rcmodel
     
  20. Brass Rain

    Brass Rain Member

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    I'm not saying I intended to use 9mm in a .357 or .38, I just htought it was possible and wanted to know for sure or not. Apparently not. What about .45 ACP in a gun chambered for .45 LC?
     
  21. Jim Watson

    Jim Watson Member

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    Read the Pinnacle Arms material.

    You can have your .357 ALTERED to shoot 9mm, you can have your .45 Colt (.454 Casull, .460 S&W) ALTERED to shoot .45 ACP. They will still shoot the original cartridge, although not well in the case of the .357 reamed for 9mm.

    You can't just stick the wrong round in the cylinder and blast away.
     
  22. RyanM

    RyanM Member

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    I know I saw someone at the range attempting to shoot short little auto rounds out of a .38 once, and they would just fly to the front of the cylinder instead of going off when the firing pin hit them.

    I thought they were 9mm, but maybe they were .380 ACP or something?
     
  23. GP100man

    GP100man Member

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    too much cheap brass about to fool with gettin hurt!!!
    even if you do get one in a loose chamber , or one of different caliber why risk limb & life ???????
    35,000 psi will find the tinyest crack & fast!!!!!
    not to mention possible damage to your firearm!!!

    GP100man
     
  24. zxcvbob

    zxcvbob Member

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    Hypothetically (of course) you could resize your 9mm ammo with a .38 Special sizing die (or Lee factory crimp die) and it would fit in the chambers of a .357 or a strong .38 Special. But then there's nothing to headspace the cartridges. They might bind at the back enough to hold them in place enough to fire, I dunno. But it would not be very precise or reliable. I'm not sure what would then happen when the bullet hit the leading edge of the chamber throats, but you could theoretically get those reamed out to a long taper to prevent problems. Your .357 and .38's would probably like that modification anyway.

    If you reamed out the cylinder to accept an unmodified 9mm cartridge, you still have the problem with headspacing. And it would probably ruin your .38 Special and .357 Mag brass when it fire-formed to the opened up chamber.
     
  25. Old Griz

    Old Griz Member

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    If you want to shoot both, I suggest you get a Ruger .357/9mm Convertible. I have two, one in each barrel length, and they are really a lot of fun. Most accurate in .357/.38, but you can pop in the 9mm cylinder and shoot the cheap Wolf stuff. It's not as accurate, but pretty darn close. The jacketed 9mm bullets shoot the best. No moon clips needed.

    Like everyone else has said, shoot what you gun was intended to shoot.
     
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