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Old May 7, 2012, 07:05 PM   #1
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.357 for 9mm (.355)

a friends dad left him some "stuff" and amongst this "stuff" were some 125 / 147 grain semi Jacketed bullets for an old 38 he no longer has/
well he asked me if I wanted them...I don't own a 38 but do shoot 9mm...could I use them ? would it be safe being a couple of thous larger ?

thanks Matt.
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Old May 7, 2012, 07:10 PM   #2
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Some guns yes, some guns no. I bought some 9mm gun show reloads long ago that were made using .357 diameter HP's. They ran fine in my ruger p-95 and P-89, but would jam my kel-tec PF9 TIGHT. I had to disassemble it to get the first one out of the chamber, after that I tried to just drop a few more in the chamber and they wouldn't go all the way in....
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Old May 7, 2012, 07:22 PM   #3
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Make a couple of dummy rounds. If they chamber at proper COL then they should feed just fine. The other thing I can think of is to see if someone that loads for .38 spcl/.357 mag would trade them for some .355 plinkers.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.
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Old May 7, 2012, 08:24 PM   #4
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I would not use them in 9mm. There is data for .357" jacketed bullets in .38 Super, but I've never seen it for the 9mm.

The 9mm is a tiny, high pressure cartridge and pressure will spike rapidly with any variation in charge weight, bullet seating depth, etc... Using and oversize jacketed bullet would be a huge no-no in my book.
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Old May 8, 2012, 09:38 PM   #5
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Take this as an opportunity to buy a .38 or .357mag.

Unless you are talking about several hundred bullets (like maybe a thousand or more) I wouldn't bother trying them in 9mm.
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