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Thread: Swedish Rolling block - notches

  1. 04-07-2023, 07:28 AM #1
    mira
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    Swedish Rolling block - notches

    I found at breech block behind the breech block head two notches, does anyone know why they are there?
    Please about your advise.

    Anyway thanks guys for your advice

    https://mira393.rajce.idnes.cz/Swedish_RB/
    Last edited by mira; 04-07-2023 at 02:39 PM.
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  2. 04-11-2023, 03:15 PM #2
    mira
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    really no one dont know why are there two notches???

    https://mira393.rajce.idnes.cz/Swedish_RB/
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  3. 04-11-2023, 06:17 PM #3
    Mk42gunner
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    Just a guess, but they may be intended to prevent stress risers from forming cracks.

    Robert
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  4. 04-11-2023, 06:21 PM #4
    muskeg13
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    I don't know that they are really notches, but are a "step" machined at the rear of the receiver where the barrel stub slightly protrudes. Maybe they were formed when the rear of the receiver was machined flat? Here's what it looks like on mine with the barrel installed.
    Click image for larger version.  Name: DSCN3405.jpg  Views: 25  Size: 38.6 KB  ID: 312869 Click image for larger version.  Name: DSCN3407.jpg  Views: 18  Size: 33.4 KB  ID: 312870
    Last edited by muskeg13; 04-11-2023 at 06:40 PM.
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  5. 04-11-2023, 06:44 PM #5
    gc45
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    gas escapes for case head rupture.
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  6. 04-12-2023, 07:41 AM #6
    JSnover
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    Charging clip guides
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  7. 04-12-2023, 08:45 PM #7
    Deadeye Bly
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    I'm not sure they have a purpose. They may just be tool runout from machining the rear of the receiver and to provide clearance for the barrel extension.
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  8. 04-13-2023, 01:58 PM #8
    mira
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    thanks guys there are a lot of possibilities, (but the most likely may be according to Robert they prevent stress risers from forming cracks....).
    Last edited by mira; 04-17-2023 at 09:57 AM.
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BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
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LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check