Pennsylvania Firearm Owners Association
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  1. #1
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    Default Colt 1911 crown repaired.

    A few weeks ago I posted a photo of the damaged Colt 1911 crown from the factory. I took the pistol to a local gunsmith: Dell's to be exact. We looked at it with magnification and could see two spots where the metal was mashed inward, deforming the grooves.

    He recut and recrowned the barrel and then polished the crown. Itís about as perfect as it can be now. Very pleased with the work. Here are before and after pics.




  2. #2
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    Default Re: Colt 1911 crown repaired.

    Very professional job.

    Interesting that the barrel bushing was Rockwelled at some point.

    Noah
    If you are not part of the solution, you are the precipitate.

  3. #3
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    Default Re: Colt 1911 crown repaired.

    Would have never happened if it was a Glock.


    Hi Justin!!
    Rules are written in the stone,
    Break the rules and you get no bones,
    all you get is ridicule, laughter,
    and a trip to the house of pain.

  4. #4
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    Default Re: Colt 1911 crown repaired.

    Quote Originally Posted by Noah_Zark View Post
    Very professional job.

    Interesting that the barrel bushing was Rockwelled at some point.

    Noah
    Is that what that punch is? Do they test the hardness of it at the Colt factory? Judging by that crown from the factory, who the heck knows what they're doing over there.
    The reason I went to Dell's is because I didn't want to deal with Colt. Turns out for a little extra money, I got a crown that's something to be proud of.

  5. #5
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    Default Re: Colt 1911 crown repaired.

    The punch mark is a Rockwell hardness indentation.

    From a photo on Kahr talk, five rockwell indents in the underside of the top of a slide:



    None of the bushings on my current Colt 1911 pistols exhibit such a mark, but I've seen them before on other Colt 1911s, infrequently. I have assumed that Colt rockwells a sampling of a batch quantity of bushings (so many per 100, etc.) as a matter of routine process control auditing and just uses the tested bushings for production if the hardness is within spec.

    Noah
    If you are not part of the solution, you are the precipitate.

  6. #6
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    Default Re: Colt 1911 crown repaired.

    Quote Originally Posted by Noah_Zark View Post
    Very professional job.

    Interesting that the barrel bushing was Rockwelled at some point.

    Noah
    I dunno. It could be a "hold on place" thingie from when the bushing is stamped from a sheet. Not likely that a test piece is put back into the production line.

    But again, I dunno.

  7. #7
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    Default Re: Colt 1911 crown repaired.

    Quote Originally Posted by stainless View Post
    I dunno. It could be a "hold on place" thingie from when the bushing is stamped from a sheet. Not likely that a test piece is put back into the production line.

    But again, I dunno.
    Actually very likely that something Rockwell tested and passed be dropped back into production.. most manufacturers consider it Non-Destructive Testing (NDT) as it down not affect form, fit or function..
    the argument comes that hardness testing does change the VERY small foot print leaving an imprint


    Level II NDT specialist (PT, MT, RT)
    Last edited by Parrisk; June 14th, 2018 at 11:58 AM.
    Retired US Army
    NRA Life Member, GOA, USCCA
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  8. #8
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    Default Re: Colt 1911 crown repaired.

    Ok I feel like an ass but they took too much off. The crown is perfect but the muzzle is buried in the bushing. 1911 barrels protrude just a bit and there was room on that barrel to do just that. Only the very end of the bushing bears on the barrel and this setup is very close to the end. I don’t know if it effects wear and lock up but it looks off as compared with other 1911s to me.
    The Gun is the Badge of a Free Man

  9. #9
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    Default Re: Colt 1911 crown repaired.

    Quote Originally Posted by Gunsnwater View Post
    Ok I feel like an ass but they took too much off. The crown is perfect but the muzzle is buried in the bushing. 1911 barrels protrude just a bit and there was room on that barrel to do just that. Only the very end of the bushing bears on the barrel and this setup is very close to the end. I donít know if it effects wear and lock up but it looks off as compared with other 1911s to me.

    Maybe a 11 degree crown would have avoided taking off that much material?
    Toujours prÍt

  10. #10
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    Default Re: Colt 1911 crown repaired.

    Quote Originally Posted by Hawk View Post
    Maybe a 11 degree crown would have avoided taking off that much material?
    I believe it is an 11 degree crown.

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