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Thread: 10mm to .357 Sig?

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  1. #1

    10mm to .357 Sig?

    I have a Colt 10mm that I never shoot, (I have two other 10s that I do shoot). I really like the .357 Sig caliber. But, I have never seen a 1911 chambered in .357. I am thinking that a Delta Elite platform would be a pretty good base for this conversion. Anyone tried it? And please, no suggestions of different calibers or tell me that I am wasting a good 10mm.

    ranburr

  2. #2
    Join Date
    14th December 2005
    Location
    NC-Triangle area
    Posts
    429
    There are several brands of pistols that can be converted from ten mm to .40 and .40 to .357 Sig as you know. The one difference I have noticed is they use ramped barrels, but there may be exceptions. If you can find a barrel, you may be good to go. Getting that bottle necked cartridge to feed in a Colt configuration frame and barrel ramp may be a problem. Interesting project.
    xxxxxx Iron bottom sez; Don't let your Rat Terrier hang around with college boys.

  3. #3
    Join Date
    9th February 2007
    Location
    albuquerque, NM...formerly PA
    Posts
    4,219
    I really like the .357 myself. I'm sorry i can't provide you with any specifics about the conversion....but personally i think that i would not alter the Delta 10mm, as it's no longer in production. It will lose value significantly by modifying it in any way. On the other hand, it's your gun so do what makes you happy (i'm thinking about modifying a "Compact" to my taste, down the road). An alternative (if this type of conversion is possible) would be to buy a cheaper 1911 and start the conversion from there.
    Curious to hear what others have to say about the conversion possibilities.
    Eli

  4. #4
    Any idea on what would be a good recoil spring wt for this conversion?

    ranburr

  5. #5
    Join Date
    4th April 2005
    Location
    Arizona Territory
    Posts
    1,763

    Big .38 Super fan!!!

    A 9mm/.40 S&W to .357SIG would be easier; others can tell you which ejector to use (and whatever else you'd need) - the .38 Super and .45acp have different ejectors, extractors etc to consider.

    Barsto makes .357SIG barrels for the 1911 and you'll need to tell them which slide you have.
    http://www.barsto.com/category_main.cfm?ID=GV&cco=24

    You'll find the .357SIG to be less versatile than the 10mm given the same platform.

    Bob
    NRA Life Member since '67

    "Never interrupt your enemy when he's making a mistake."
    Napoleon

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