Reparation of barrel / Walter Olimpia

Discussion in 'Engraving & Refinishing' started by riffler, Jul 21, 2014.

  1. riffler

    riffler New Member

    Dear friends,

    I am new here so excuse me if I didn't get the appropriate place to ask:

    I use an old Walter Olimpia pistol but my barrel got broken so I have to repair it. I cut off the chamber and I am going to replace it with a hand made one. I shaped it ruffly but here comes the problem - in fine shaping. I never shaped a chamber before so I don't know exactly what kind of tools I need to use and what order of steps. As far as I read in some forums, there are several types of reamers (for example - "Long Rifle Bentz", "Bentz" only, "Long Rifle Match", etc.) but I am not sure which exactly I need to use in this case.

    May you help me with any advices?

    Thank you in advance!
  2. danf_fl

    danf_fl Retired Supporter

    There is a difference in the .22lr casings.
    So which ammo are you going to use?
    The CCI stinger casing is longer than the "normal" .22lr casing.

  3. c3shooter

    c3shooter Administrator Staff Member

    The Bentz is a match chamber for a semi-auto, slightly larger overall than a regular minimum-dimension match chamber but still tighter than a standard-size chamber.

    There can be a lot of difference between the reamers. Depends on what you want to do with the pistol. For the average shooter, they would likely not greatly benefit from a match chamber, and may experience difficulty in rounds safely chambering in a semi. Bentz is sort of a compromise.

    However, we have some REAL gunsmith's around here- I am a hobbyist. I gladly defer to their judgment.

  4. riffler

    riffler New Member

    Dear c3shooter,

    Thank you for your interesting answers!

    I know that the lengths of the casings are different and I know that the Bentz reamer is a compromise. I want to use the longest CCI Stinger and all the rest cartrages so I am considered to compromise.

    Excuse me for my bad English - probably I did not explain right the case.

    The hole chamber of my pistol is broken so I cut it off at all. Now the barrel is shorter with 25 mm (1 inch) than the original fabric ones.

    In this case I need to make a completely new chamber, not just to repair the old one with a Liner (for example - 770-100-022 or similar).

    In this case do I have to extend the diameter of the barrel with any specific tool (for example - Liner Drill 361-504-008 or 361-504-000) and than to use a Bentz Finisher Reamer (for example 513-050-016) for making the chamber or, I can make the chamber only with use of the Bentz Finisher Reamer?

    Can you tell me in this case what kind of tools I need and what are the steps of the operation to create completely new chamber?

    Thank you in advance for your attention and help!
  5. riffler

    riffler New Member

    Thank you friends!