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Thread: Any thoughts

  1. #11
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    yamoon,
    Go back to Axel's discussion of primers. The .254" Berdan primer used in the original 8.15x46R was known as the M71 primer, which was developed because of ignition problems with the M71 Mauser rifle. This primer is much easier to ignite than todays large rifle primers, not only because of the diameter, but it was made of thinner and softer metal. Old hammer drillings chambered for cartridges which used the M71 primer often will not ignite large rifle (or even .217" berdan)primers. Some users of these drillings have satisfactory results with large pistol primers. In this case the rim can be thinned from the front, because the pistol primer is slightly thinner than the rifle primer. I suggest you try pistol primers before making a new spring. If it doesn't work, you haven't lost much, but if it does, you will be ahead.
    Mike
    Last edited by mike ford; 02-01-2016 at 09:32 PM.

  2. #12
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    Axel, that's why I like this forum, I learn something everyday.

    yamoon, check Wolff Gun Springs at; www.gunsprings.com they have a lot of pre-made springs that might work.

    Thanks, Diz

  3. #13
    The ignition problem the 71 Mauser faced early on was the fact the original UMC-developed large Berdan primer was domed. This had worked well enough with big hammers and strong mainsprings, but the 71's coil spring-powered firing pin found it a tough go, so the primer face was flattened. Worked fine after that. Dan

  4. #14
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    Axel,

    Would you have a breakdown drawing of that action so I can see the differences? I am curious as to how it works.

    Thanks, Diz

  5. #15
    Senior Member
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    As I wrote above, a drawing and photos known to me of the von Schanzl action may be found on page 112 of Tom Rowe's book "Alte Scheibenwaffen Vol.2", available from the GGCA bookstore on this site. Out of respect for Copyright I will not post them.
    Gustav von Schatzl, 1854 - 1928, was an Austrian civil engineer. From 1887 to 1898 he was the director of the Ferlach gunmaking school. Actions to his design were made by Hugo Schilling, Suhl, and Emil Barthelmes, Zella - Mehlis.

  6. #16
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    Sorry Axel, I'm getting old and sometimes forget what was written before. Thanks, Diz

  7. #17
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    Feb 2012
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    Junction City, Ks
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    Axel
    Thanks for the Dixie gunworks tip. I obtained a v main spring for $15, spent an hour trimming & fitting, works every time. I have to remove it, polish the raw ends, reassemble and call it fixed.
    Mike

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