Barrel overhang/frame feedramp/barrel bed length.

Discussion in '1911 Gunsmithing' started by pistolwretch, Jan 30, 2012.

  1. pistolwretch

    pistolwretch Dremel jockey Supporting Addict

    Aug 26, 2011
    I thought a few here might look at this:

    This first picture shows the 'barrel bed length'. It is measured from the
    vertical impact surface to the top of the feed ramp. You need to slightly angle your calipers to get beneath the top edge break of the VIS.
    This measurement needs to be .246" minimum. This one measures right at .246".

    [​IMG]

    This shows a new and un-fit Kart bbl fully nested in the frame. Notice the overhang.
    [​IMG]

    The next two show a Kart bbl faced back and re-throated to privide the proper gap.

    [​IMG]

    [​IMG]

    Pic of the unsupported case area. If needed it could be deepened even further.

    [​IMG]
     
  2. Bender

    Bender Supporting Addict Supporting Addict

    Aug 15, 2011
    Cool pics,.........as always, thanks Chuck!
     

  3. limbkiller

    limbkiller Pulling my hair. Supporting Addict

    Aug 18, 2011
    Thanks old man.Keep the pics coming as my doc said old guys die early that drink. We need a record of your work. Hell I should say they as I'm an old drinker. LOL
     
    Last edited: Jan 30, 2012
  4. Fire-Medic

    Fire-Medic Back At It

    328
    Jan 10, 2012
    Fantastic pictures Chuck!
     
  5. RaginCajun

    RaginCajun Got Guns, Got Freedom Supporting Addict

    108
    Oct 20, 2011
    Thanks for the cool pics Chuck! What might the proper gap between top of feed ramp and bottom of barrel throat be?
     
  6. Mechanized

    Mechanized He's a large "member" Supporting Addict

    Sep 24, 2011
    I edited this. I have read that the gap should be .03125 and I have also read that it is .020 - .010. Please shed some light chuck.
     
    Last edited: Jan 30, 2012
  7. pistolwretch

    pistolwretch Dremel jockey Supporting Addict

    Aug 26, 2011
    In most slide/frame/barrel combinations, .025" - .050".
     
  8. Joe C

    Joe C Custom Pistolsmith Sponsor

    Sep 11, 2011
    Chuck, great thread sir. Thanks for sharing. Guess I'll start taking some pics to share also...you have inspired me. ;-)
     
  9. RaginCajun

    RaginCajun Got Guns, Got Freedom Supporting Addict

    108
    Oct 20, 2011
    Thanks Chuck, gonna take a look and see if mine is within spec.
     
  10. knedrgr

    knedrgr Low capacity, low tech...

    Aug 15, 2011
    Very cool info Chuck! Thanks for the pictorial.
     
  11. Mechanized

    Mechanized He's a large "member" Supporting Addict

    Sep 24, 2011
    Please do joe. I am sponging as much free info from you guys as possible.
     

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